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What is SullysBlog.com?
SullysBlog.com is a blog about domain investing, run by Michael Sullivan. It covers the practical side of buying, valuing and selling domain names: keyword and premium domains, pricing decisions, negotiation, and industry news. The site is organized into "Domain Insights" (articles) and a "Domain Glossary," and it mixes written posts with interviews of investors in different markets.
What you'll actually find there
- Deal and pricing judgment. Posts work through real selling situations, such as what happens when a buyer searches your name and finds an old forum post stating your purchase price, or whether to honor a completed sale when a higher offer arrives later.
- Cost thinking for hand-registrations. One article reframes a cheap registration as a recurring annual expense rather than a one-time purchase, which matters if you hold many names.
- Interviews with investors outside the US/Europe. For example, a conversation with Thyago Guimarães about teaching domain investing in Brazil and how .com compares with .com.br, and one with Ibrahem Abdelghany about his experience with a .health domain.
- Terminology support. The glossary is useful if you're new and keep meeting terms like "keyword premium" without a clear definition.
Who it suits
It fits someone who already owns a few domains or is seriously considering it and wants to reason about pricing, holding costs and buyer behavior. It is less of a step-by-step beginner course and more a running commentary from one investor's perspective. Readers outside the US may find the interviews especially relevant, since they address country-code domains and local buyer habits that US-focused blogs often skip.
A practical next step
If you're weighing a purchase, read the hand-registration cost article alongside the pricing-post article, then apply both to a single name in your shortlist: total annual cost over, say, three years, and whether anything you've published publicly could undercut your asking price later. For a second, more reference-style view of domain terminology, see ICANN, the body that coordinates the domain name system.
How do I value a keyword premium domain before making an offer?
Value a keyword premium domain by separating what the words are worth from what the name can realistically earn. Start with comparable sales of similar keyword names, then test whether the keyword describes something buyers already pay for: a service, a product category, or a location. A name like a city plus a trade ("plumber," "dentist") has clearer commercial demand than a broad, abstract phrase.
A practical valuation sequence
- Define the exact keyword and extension. "Keyword premium" often means the registry charges more than a standard registration because the word is in demand. Check whether the premium applies only to the first registration or also to renewals, since a high annual cost changes what the name is worth to you.
- Look for real comparable sales. Match the keyword's commercial intent, the extension, and the sale date. A .com sale from several years ago is weaker evidence than a recent sale in the same extension.
- Estimate end-user demand. Ask how many businesses would plausibly want this name and could afford it. Fewer than a handful of plausible buyers usually means a lower offer, regardless of how good the words sound.
- Check your holding cost. Registration and renewal fees, plus the years you may wait, set your floor. The SullysBlog.com piece on hand-registrations makes the point that a cheap domain is an annual commitment, not a one-time purchase, which applies equally to premium renewals.
- Set a walk-away price before you offer. Decide the maximum you would pay based on your resale or development plan, then negotiate below it.
Comparing the two main valuation routes
| Approach | Best for | Strength | Limitation |
|---|---|---|---|
| Comparable sales | Investor resale | Grounded in what buyers actually paid | Thin data for unusual keywords or extensions |
| End-user/development value | Building a site or selling to one business | Reflects real revenue potential | Requires market research and assumptions |
A concrete example
Suppose you are considering a two-word service keyword in a country-code extension. Search recent sales for the same keyword in .com and the local extension. If local businesses in that trade routinely advertise online and the .com version sells in the thousands, a modest offer with room to negotiate is reasonable. If the only evidence is an asking price with no completed sales, treat it as a ceiling, not a benchmark.
Reputation matters too
SullysBlog.com's post about a buyer Googling a seller is a useful warning for anyone making offers: public posts about what you paid, or what you would accept, can surface during negotiation. Michael Sullivan's observation is that acquisition cost does not set value, and buyers will still ask about it. For your own offer, keep your reasoning private and base it on comparables and demand rather than on the seller's stated price.
As a next step, write down three comparable sales, your renewal cost over five years, and the single most likely buyer type. If the numbers do not support an offer above your walk-away price, pass. For broader context on buying and selling, SullysBlog.com covers domain investing topics, and NameBio publishes recorded domain sales that can help you find comparables.
When should I sell a domain versus hold it long-term?
The decision hinges on whether the name has a realistic path to a buyer at a higher price, and whether you can carry its renewal costs while you wait. SullysBlog.com frames the hold-versus-sell question around two practical pressures: annual renewal costs that accumulate across a portfolio, and the risk that a public post about what you paid can undercut your asking price when a buyer searches your name. Neither point dictates a single answer, but together they suggest a simple test.
A working test
Ask three questions about the specific name:
- Is there an identifiable buyer type? If you can name the industry, business size and use case that would want it, a hold is easier to justify. If the only buyer is "someone who likes the word," you are speculating.
- Can you carry the renewal for several years without strain? A hand registration is a recurring expense, not a one-time one. Multiply the renewal by the number of years you would realistically wait before concluding the name will not sell.
- Would selling now fund something better? A modest sale that frees capital and attention for a stronger name often beats holding a weak one out of stubbornness.
When selling now tends to make sense
- You have an offer at or above what you would have accepted six months ago, and no concrete reason to expect a better one soon.
- The name is a marginal fit for its category, and its renewal cost buys you little.
- You need the liquidity, or the name is distracting you from better assets.
- You have already told a buyer yes. SullysBlog.com's account of a seller who tried to accept a higher offer after agreeing to a sale illustrates the reputational cost of reversing a deal; treating an accepted offer as binding protects your standing with the marketplaces and buyers you will deal with again.
When holding tends to make sense
- The keyword is one that businesses in a growing sector actually use in their branding, and comparable names change hands at levels well above your cost.
- You can hold for years without the renewals affecting your other decisions.
- The extension and term fit a long-horizon thesis. The site's interview with Ibrahem Abdelghany describes .health as a very long-term hold, which is his assessment of that extension rather than a general rule; the practical lesson is that long holds only work when the renewal burden is small relative to your budget.
The public-price trap
If you discuss your purchases in forums or on social media, assume a prospective buyer will find it. Asking $8,500 for a name you once described as a $40 pickup is legitimate, since your cost does not set value, but you should expect the question and have a plain answer ready: the price reflects the buyer's use, not your basis. The alternative is to keep acquisition prices private, which costs nothing and removes the awkward conversation.
A practical next step
Write one line for each name you are unsure about: the buyer type, your target price, the annual renewal, and the number of years you are willing to fund. Any name where the years-times-renewal figure approaches your target price is a sell candidate; any name where you cannot fill in the buyer type is a drop candidate at renewal. For more on valuation and selling mechanics, see SullysBlog.com.
How do renewal costs affect whether a hand-registered domain is worth keeping?
A hand-registered domain is not a one-time $12 purchase; it is a $12-per-year commitment, and that annual cost is what should decide whether you keep it. As SullysBlog.com puts it in its post on hand-registrations, the low first-year price makes it easy to talk yourself into a name you can't clearly justify, while the renewal quietly adds another recurring expense to your portfolio. The real question isn't "is $12 cheap?" but "will this name earn its renewal every year I hold it?"
A practical way to judge a renewal
- Estimate a realistic sale price and timeline. A name you think could sell for $1,000 in three years is a very different bet from one with no plausible buyer.
- Multiply by holding years. Ten years of renewal on a $12 name is roughly $120 before any sale—compare that against your expected net proceeds, not the sticker price.
- Ask what changed since registration. If you still can't name a likely buyer, the renewal is the moment to let it go.
- Watch for premium renewals. Some "cheap" registrations renew at much higher rates; check the renewal price, not just the first-year price, before registering.
The trade-off is straightforward: a portfolio of speculative names can be cheap to start and expensive to maintain. Dropping weak names at renewal keeps capital free for names with clearer demand.
As a next step, list every domain you hold with its renewal date and renewal price, then rank each by how specifically you can describe its buyer. Names you can't justify get dropped at renewal; the savings fund the ones you can.
What should I know about selling domains on marketplaces like NotRenewing?
Selling on a marketplace like NotRenewing is mostly about accepting that the deal is binding once a buyer has paid. The most useful lesson from SullysBlog.com comes from a case the site describes: a seller had sold several domains through NotRenewing, buyers had paid and were waiting on transfers, and then higher offers arrived elsewhere. The seller told the buyers he intended to take the higher offers instead. Sullivan's framing is that a deal is a deal even when a better offer appears.
What that means in practice
- Price before you list. Once a buyer pays, a later higher offer is not a reason to back out. If you might regret your asking price, set it higher or use a floor you can live with.
- Assume buyers research you. Another post on the site covers a seller quoting $8,500 for a domain, then having the buyer find an old forum post saying he'd paid $40 and would be happy with $500. Acquisition cost doesn't set value, but expect the question and have a plain answer ready.
- Count the annual cost, not just the purchase price. A hand-registered name is a recurring expense, not a one-time $12 decision, as the site puts it. The same logic applies when you hold inventory waiting for a marketplace sale.
- Marketplace choice is secondary to conduct. NotRenewing is the venue in the example, but the transfer-and-payment sequence is what creates the obligation. Understand that sequence before you list.
A concrete scenario
Suppose you list a two-word .com at $2,000. A buyer pays, and the next day an end user offers $6,000. The disciplined move is to complete the first sale and, if you want, tell the second buyer the name is under contract. You keep your reputation with the marketplace and the buyer, and you avoid a dispute over a name you no longer control.
Decision criteria
- If you sell infrequently: price conservatively and honor every paid sale; your track record is the asset.
- If you hold a large portfolio: treat each listing as a commitment and review your floors quarterly rather than renegotiating after payment.
For background on valuation and negotiation, NamePros hosts active investor discussion, and DN Journal covers domain sales reporting.
How does a domain's extension, such as .health or .com.br, affect its resale potential?
A domain's extension affects resale potential mainly through who recognizes it, how easily buyers can type and trust it, and how narrow the pool of likely buyers becomes. The name itself still does most of the work; the extension decides how far that name can travel.
What the evidence shows
SullysBlog.com's interviews give two contrasting examples. Thyago Guimarães, who teaches domain investing to a Brazilian audience through Domínios Lucrativos, discusses .com versus .com.br and which keywords Brazilian businesses buy. Ibrahem Abdelghany bought Royal.health in 2019, tried to build a business on it, and is now selling it; he describes .health as a very long-term hold. These are the interviewees' observations, not proof of market-wide outcomes, but they point to a useful distinction: a country extension can be the default for local businesses, while a niche extension can be credible yet slow to sell.
How to judge an extension
- Local trust: If your buyers are Brazilian companies, .com.br signals local presence and is often what customers expect. That can make resale easier within Brazil but does little for buyers outside it.
- Category fit: .health reads as authoritative for health ventures, but it narrows the buyer list to organizations that want that signal and are willing to explain the extension to users.
- Buyer pool size: .com is the broadest default; country and niche extensions trade reach for relevance.
- Hold time and renewal cost: A narrow extension may sit unsold for years. SullysBlog.com's post on hand-registrations makes the point that a cheap registration is an annual expense, not a one-time fee—multiply it across the years you expect to wait.
- Exit expectations: Ask what comparable names in that extension actually sell for, not what the extension's registry promotes.
| Extension type | Likely buyer | Resale trade-off |
|---|---|---|
| .com | Broadest range of businesses and investors | Strongest liquidity, highest entry prices |
| Country code (e.g., .com.br) | Local businesses and regional investors | Strong locally, limited internationally |
| Niche (e.g., .health) | Category-specific organizations | Credible fit, thin buyer pool, longer holds |
Next step
Before buying, list five real organizations that could plausibly use the name on that extension, and check whether similar names in the same extension have sold recently. If you can't name the buyers, treat the name as a long-term hold and budget renewals accordingly. For more on valuation and selling, see SullysBlog.com.
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