About BuyPerUnit
BuyPerUnit is a real-time price-per-gigabyte comparison tool for storage devices. It tracks prices across Amazon, Best Buy, and Newegg — automatically, twice daily — so you can see which product gives you the most storage for your dollar right now.
What BuyPerUnit Tracks
BuyPerUnit tracks price-per-gigabyte ($/GB) in real-time across Amazon, Best Buy, and Newegg. Prices sync automatically twice daily — at 6AM and 6PM UTC — pulling directly from each retailer's live product API.
Coverage and Data Sources
BuyPerUnit currently tracks over 2,800 active listings across three major retailers. Out-of-stock items are automatically removed from the database — only in-stock listings are shown.
Amazon
~751 listings
Amazon Creators API
Best Buy
~411 listings
Best Buy Products API
Newegg
1,670+ listings
Rakuten/Newegg product feed
Data is sourced directly from official retailer APIs: the Amazon Creators API, the Best Buy Products API, and the Rakuten/Newegg product feed. Prices and availability reflect what each retailer reports at sync time.
How Price Per GB Is Calculated
Price per gigabyte is calculated as: price ÷ capacity in gigabytes. A 1TB drive listed at $50 has a price per GB of $0.050. A 2TB drive at $80 has a price per GB of $0.040. Even though the 2TB drive costs more in total, it is cheaper per gigabyte — and that is what BuyPerUnit surfaces.
Example
$50 ÷ 1,000 GB = $0.050/GB
$80 ÷ 2,000 GB = $0.040/GB
The 2TB drive wins on value despite the higher sticker price.
Who Built This
BuyPerUnit was built by Jon Levesque, a former executive at Microsoft and DocuSign. The site grew out of personal frustration: sourcing hard drives in bulk meant opening 47 browser tabs and manually calculating which drive actually gave the most storage per dollar. BuyPerUnit automates that calculation across thousands of products and three major retailers, updated automatically twice a day.
As Seen In
PC World
“New PC storage shopping site only cares about price per gigabyte”
“Former Microsoft and DocuSign exec Jon Levesque built a site that only cares about one number: how much you'll pay per gigabyte.”
TechSpot
“New website helps you find the cheapest storage by cost per gigabyte”
“Jon Levesque, a former executive at Microsoft and DocuSign, built a website that does not evaluate performance metrics — it only cares about price per gigabyte.”
No Ads. No Sponsored Placements.
Rankings on BuyPerUnit are sorted purely by price per GB — cheapest first. There are no paid placements, no sponsored products, and no vendor relationships that affect ranking order. Amazon, Best Buy, and Newegg listings compete on equal footing. BuyPerUnit earns via affiliate commissions when you click through and make a purchase, but this has no effect on how products are ordered.
Frequently Asked Questions
What is BuyPerUnit?
BuyPerUnit is a price-per-gigabyte comparison tool that tracks storage prices across Amazon, Best Buy, and Newegg in real-time.
How often does BuyPerUnit update prices?
Prices sync automatically twice daily — at 6AM and 6PM UTC — pulling from Amazon, Best Buy, and Newegg's live APIs.
What does price per GB mean?
Price per gigabyte ($/GB) is the cost divided by storage capacity. It lets you compare a $50 1TB drive ($0.050/GB) directly against a $80 2TB drive ($0.040/GB) — the 2TB drive is cheaper per gigabyte even though it costs more.
Which retailer is cheapest for SSDs?
It varies by product and changes daily. BuyPerUnit shows live rankings across all three retailers sorted by price per GB so you always see the current cheapest option.
Does BuyPerUnit include out-of-stock items?
No. Out-of-stock listings are automatically deleted from the database. Every price you see is currently available to purchase.