I would pay $100 for something like this. I want to just scan something, have it beep, and add to a shopping list. I know amazon has something similar but I don't want to order it, just log it. Excellent project.
How good is the scanning speed? I've tried a few apps which will scan a barcode, but they all seem quite slow. If I buy 50 items at the store, I don't want to fiddle with it for 10 minutes to get everything scanned in, I'd like to buzz through them relatively fast.