BulkSpotter

With extension
Without extension

Inspiration

I was buying some acrylic panels for my 3D printer, and found it annoying to get the best value. Many of parts were the exact same, but due to different quantities and prices, I had to do mental math for each product on how much a panel costed. Amazon does sometimes have a per unit, but not always. I wanted something quick and easy to show me the per unit cost so I could make decisions quicker.

What it does

Scans the Amazon search query for quantities in the title of products. If price and quantity are detected, the per unit is calculated and displayed as if it was a regular Amazon calculation. If a product has already been processed, it is not processed again to save resources.

How we built it

wxt extension and parse the HTML using regex.

Challenges we ran into

Amazon listing titles vary a lot. Sometimes they mix the numbers in a way that it can't easily be parsed or is parsed incorrectly and causes a bad calculation.