[yobbobandana]

Could a bookstore not offer an Amazon purchasing option? If customers want to browse books in the store and purchase off Amazon, why not explicitly enable this? The tradeoff is obvious to the consumer: either get the book now for a heightened price, or get it later more cheaply. The bookstore could make a commission off the Amazon referral.

A quick web search turns up: https://affiliate-program.amazon.com/

[Tangurena]

Amazon won't go for that because a number of states treat having an affiliate in their state as a "business presence" which triggers the requirement to collect sales tax in that state.

All the affiliates in my state were eliminated that way.