Great idea, i love the simple html website :)

For determining the number of balls, i had an idea but not sure of how well it’d fit in. Could you feed the listing title, unit count, and description into an LLM with a basic “figure out how many balls are in this listing and make sure that number makes sense with the price” prefix prompt and then store that number with the ASIN? One LLM call per product should be pretty low cost, and it could automate a bunch of repetitive manual work

Before going full AI, maybe I could create a list of quantity keywords like "dozen", "3-pack", etc... and at least use that as a starting point.