A Hacker News user built TerabyteDeals, a simple tool that scrapes Amazon prices to calculate and compare $ per terabyte for hard drives and SSDs. The site provides a daily-updated, sortable table filtering by drive type, interface, and capacity, aiming to simplify a tedious manual calculation for NAS and storage shoppers.

The tool addresses a common pain point for data hoarders and system builders who frequently price out large-capacity drives. By automating the price-per-TB comparison across multiple regions, it offers a clear view of storage economics. This practical utility fills a niche that larger retail sites often overlook.

With 980 deals currently listed, the platform shows strong interest in bulk storage value. Next, expanding to more retailers or adding historical price tracking could increase its utility. For now, it's a focused tool that solves a specific, recurring problem for a technical audience.