Want to see what Amazon charges for a CD or book?
Have the barcode number?
Have a cell phone?
Just use Ringfo, formerly Amabuddy.
1. dial 888-937-4462
2. enter ISBN (for book) or UPC (for CD's)
2. listen for new and used prices, consumer ratings and similar items.
This seems a bit cumbersome, but it still falls under the "prosumer" and mobile category. I'm sure there will be an SMS service that allows you to check prices by entering the barcode numbers.
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