Pangolin automatically calculates and sorts products by unit price (weight, volume, or count).
UPDATE: Adjusting down to a 2 star review as it does not work for Walmart or Target. Amazon works, but it's a little odd to hardcode 3 specific unit types and leave out the rich data that Amazon provides right there on the page. It would also be nice to compare across unit types. Like others said, this only works on one page so far, but that is understandably a limitation, unless one used Amazon's Product API. Maintainer says this app is no longer maintained. I wrote an extension as well called Amazon Unit Price that is more flexible with the unit prices: https://chromewebstore.google.com/detail/amazon-unit-price/aggicbiihjlccnmafankkdfemoandjkj
This extension is fantastic. The ability to sort by unit price is deliberatly omitted by Amazon to keep their promoted items at the top. Not any more!! I love the interface and it's so easy to use. I appreciate that the links open up in a new tab so I don't have to keep going back and forth.
Its great! I love being able to shop the most cost effective way i can. Doesnt seem to work for walmart though, which is a little sad, but still great!
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