Recently visited Amazon Books in Seattle. Took a quick video of store and point of sale that is shown below. Overall impressions:

Looks and feels like your typical bookstore
Wood and outdoor theme is very different than that of Apple stores steel/glass modern feel
All price discovery is completed via Amazon app, there are no price tags in the store
Strong use of Amazon and Goodreads reviews throughout store to drive purchases
Electronics own the most valuable piece of real estate in-store
Believe the electronics showcase is a preview of what future stores will look like; small format stores with demos driving hardware sales to fuel content sales
Surprised there was no use of beacons or tech to welcome me to store via app or provide recommendations on what to potentially purchase
Surprised there was no use of mobile payments, you were forced to use cash register for checkout