BuyPerUnit vs DiskPrices.com: Which Finds Better Deals?
What BuyPerUnit Does
BuyPerUnit calculates the true cost per unit (like $/GB for SSDs or $/page for printer ink) across three major retailers: Amazon, Best Buy, and Newegg. It automatically ranks thousands of products daily to find the absolute cheapest option per unit. It's built for shoppers who want a polished interface with deep filtering across multiple stores.
What DiskPrices.com Does
DiskPrices.com is a beloved, minimalist tool that pulls Amazon affiliate data to show the cheapest storage per gigabyte. It uses a single, massive, text-heavy table that loads instantly. It is purpose-built for data hoarders and home server builders who exclusively shop on Amazon and want no UI friction.
Side-by-Side Comparison
BuyPerUnit Strengths
- ✓Multi-retailer: Amazon, Best Buy, and Newegg compared
- ✓More categories: storage plus printer ink ($/page)
- ✓Polished UI with 'Best Value' highlights
DiskPrices.com Strengths
- ✓Simpler interface — one retailer, one focus
- ✓Established community and long track record
- ✓Quick at-a-glance $/GB for Amazon storage
When to Use BuyPerUnit Instead
If you want to check if Best Buy or Newegg has a better deal than Amazon, or if you also need to check prices for printer ink, RAM, or SD cards, BuyPerUnit is the better tool. It also features price drop alerts and 'Best Value' highlights.
When to Use DiskPrices.com Instead
If you only care about Amazon storage prices and want to see hundreds of drives in a dense text list on one screen, DiskPrices is simpler. It has a long track record in the DataHoarder community and zero UI bloat.
Can You Use Both?
Yes. Many builders check DiskPrices for a quick Amazon baseline, then use BuyPerUnit to verify if Newegg or Best Buy is running a sale that beats the Amazon price.