For a few years now I have made an effort to first try to find a local (in the neighborhood, city or country) seller who has a good reputation before even considering Amazon. In all cases, where I have found alternatives, I've had great experiences, and no issues.

The only thing I've noticed is the very big price difference between academic/technical books when bought on Amazon vs a local book store (40+%) in favour of Amazon. Bulk discounts play a part in that I assume.