Dont waste your money on these scanning tools. As long as you have a smart phone you can do this for free. Just Download REDLASER and install it on your phone. You can scan anything with a barcode. Not just books. The tool is mainly to check the stock of the item in local stores and also on ebay and amazon.
What it also does is show you the price its selling on those websites as well. If you scan a book, it doesnt just show you the online selling price but also checks your local library to see if they have it in stock. Its a neat tool but I guess resellers have been using it to price items for resale. The company also just got bought out by EBay. Heres the link to the software:
http://redlaser.com/