Does this Shopping List application exist?

[espressivo]

Hi there!

I am looking for a shopping list that lets me keep a list of prices so I can see when something is on sale at a different store. (mostly for groceries)

Ideally the list would have:

1. Keep up with prices.
2. keep up with coupons.
3. keep up with prices by store.
4. Sync online or with desktop.

I have tried looking around, but I can't find anything that lets me add a price.

Thanks!