So glad you posted this, I was doing something similar and gave up on the idea because I noticed Amazon doesn't even want you keeping their ASINs in a database.

So glad you posted this, I was doing something similar and gave up on the idea because I noticed Amazon doesn't even want you keeping their ASINs in a database. But I kept thinking maybe I'm just being paranoid and they wouldn't care. Glad you made some money off the dev time you put in!