It’s a website that lets you sort amazon by price per ounce/pound/count
Some examples are:
Cheapest rice per pound https://bangyourbuck.com/search/rice/Lb/US/grid
Cheapest batteries by count: https://bangyourbuck.com/search/aa batteries/Count/US/grid
Hard drives by terabyte: https://bangyourbuck.com/search/hard drive/Terabyte/US/grid
Been using it for months, and I can’t stand using Amazon without it now.
Search for a USB flash drive to find some really sketchy scam attempts. Looks like you’re getting a gazillion gigabytes for a few dollars, but in reality you’ll get a lesson in what e-waste means. Scroll down to find the realistic products with realistic prices.