This is an excellent supplement and has been helpful in several of my sessions so far. Whenever my players wander into a shop I'm confident now that I can have a good assortment of basic items for them, no matter what sort of shop they're running into. I plan to work in the legendary merchants at some point as well; there's a devil at the crossroads encounter in here that has a lot of potential for fun.
Overall this is well-written and well-balanced, with a ton of variety. Excellent quality, and worth the price.
[5 of 5 Stars!]