I'd like to give readers the choice of where the ISBN links go to.
If the ISBN link goes to amazon.com I can see a fuller description, which helps me decide whether to buy the book.
The Wikipedia might even make money on referrals. I think Amazon has a program that permits referrers to collect a small percentage if a buyer follows the referrer's link.
Couldn't the User Preferences page contain an option letting the reader choose Price Scan, Amazon, or whatever?
Ed Poor (like when you have no money)