How to Find and Evaluate Storage Deals by Price per GB/TB

The fastest way to judge a storage deal is to convert it to price per GB or per TB and compare it only against drives of the same type, capacity class, interface, and condition. A $90 4 TB HDD and a $90 2 TB NVMe SSD are not competing deals — they serve different jobs. PricePerGig.com is built around exactly this comparison: it ranks live HDD, SSD, and NVMe listings on Amazon.com (US) by price per GB/TB with a ValueScore, and lets you filter by capacity, type, interface, form factor, condition, warranty, and brand.

Step 1: Set the right filters before you look at any price

Unfiltered "cheapest storage" lists mix 128 GB flash drives with 20 TB enterprise HDDs. Narrow the field first:

• Type: HDD, SSD (including NVMe), hybrid, flash drive, memory card, optical, tape, enclosure, accessory
• Capacity range: the site offers at-least / up-to selectors from 1 GB to 32 TB
• Interface: SATA, PCIe (NVMe), USB, Thunderbolt, eSATA, SAS
• Form factor: internal 3.5", internal 2.5", external 3.5"/2.5", external SSD, M.2 (2230/2242/2280/22110), U.2, U.3
• Condition: new, open box, refurbished, used, for parts
• Warranty: 1 month+ through 5 years+
• Brand: Samsung, Western Digital, Seagate, Crucial, Kingston, SanDisk, Toshiba, HGST, Intel, Corsair, ADATA, HP, Lexar, PNY, Micron, SK hynix, Hitachi, Patriot, and others

Once the filters match what you actually need, the price-per-TB ranking becomes meaningful.

Step 2: Read price per GB/TB, not the sticker price

A 2 TB drive at $100 is $50/TB. A 4 TB drive at $160 is $40/TB. The second is the better value per gig even though it costs more cash. This is the single most useful habit for evaluating storage deals, and it's why the site sorts by $/TB rather than by total price.

Two caveats:

• Very small and very large capacities distort the curve. Tiny flash drives often have terrible $/TB; the largest HDDs are usually the most efficient per TB but may exceed your budget or your enclosure's bay count.
• ValueScore is a ranking aid, not a verdict. Treat it as a shortcut to shortlist candidates, then check the specific model yourself.

Step 3: Compare across stores, not just one

The site groups marketplaces by region and links out to them, including:

There's also a Euro Zone Amazons (beta) option. Cross-checking the same model across two or three of these catches cases where one store is running a real promotion and another isn't.

Step 4: Separate a real discount from a fake one

A "was $199, now $149" tag means nothing without context. Signals that a deal is genuinely good:

• The $/TB is below the median for that exact type and capacity class, not just below the drive's own inflated list price
• The price is at or near a historical low for that model
• It coincides with a known sale period (major shopping events, seasonal promotions)
• The same model is similarly priced at a second store — a lone outlier is sometimes a pricing error or a mismatched listing

If a drive is dramatically cheaper than every comparable listing, assume something is different: older generation, OEM/no retail packaging, lower endurance rating, or a seller with poor terms.

Step 5: Price the hidden costs and risks

The listed price is rarely the final cost. Check:

• Shipping and tax — a cheap eBay listing can lose to a slightly pricier Amazon listing once shipping is added
• Warranty length — the site's warranty filter exists because a 1-month warranty and a 5-year warranty are different products at the same $/TB
• Condition — refurbished and used drives can be excellent value, but you're accepting unknown power-on hours and wear; "for parts" listings are not deals, they're projects
• Return policy — critical for used and open-box drives, where a DOA unit is a real possibility
• Compatibility — an M.2 2230 drive won't fit a 2280 slot; a SAS drive won't work in a consumer SATA port

Step 6: Match the drive to the job before you buy

The best $/TB deal is worthless if it's the wrong technology:

• Bulk cold storage / backups / media library → large HDDs, where $/TB is lowest
• OS, applications, active projects → NVMe or SATA SSD, where you're paying for speed, not capacity
• Portable / cross-device → external drives or external SSDs, which carry a form-factor premium
• Tiny capacity needs (boot drive for an old machine, camera card) → flash drives and memory cards, judged on absolute price rather than $/TB

A practical workflow

1. Open PricePerGig.com and set your marketplace to your region.
2. Filter by type, capacity range, interface, form factor, condition, and minimum warranty.
3. Sort by $/TB and shortlist the top few models.
4. For each shortlisted model, check the same product on one or two other stores in your region.
5. Confirm the price is below the typical $/TB for that class, not just below a marked-down list price.
6. Add shipping, tax, and warranty value to the total before deciding.
7. Buy from the store with the best all-in terms, not the lowest headline number.

The site's stated purpose is exactly this: "Stop Overpaying for Storage" — helping you get the best value per gig and store more for less. Note that it earns from qualifying purchases, so the links are affiliate links; that doesn't change the $/TB math, but it's worth knowing when you're weighing its rankings.