I think this is a fascinating concept, store that buy, sell and trade nothing but legos.
I know there are a few around but I have not been able to find a list of them, so I figured I would start my own.
True we may not have 101 yet but I hope to have that many some day.
If you know of a brick and mortar lego store please let me know, I would love to get it added to the list.
Bricks and Minifigs
This is the first one I was able to find and they have several locations
There is one in Plano Texas
http://www.nbcdfw.com/news/local/resale-shop-buys-and-sells-only-legos-368522291.html
Pheonix Arizona
https://bricksandminifigs.com/store/phoenix-arizona/
Creative Brick Builders Round Rock Texas
http://creativebrickbuilders.com/
Five Star Bricks, Orangevale California
Atlanta Brick Company (Newnan, GA)
BrickParties and More
https://www.facebook.com/BricksPartiesandMore/
4651 Woodstock Rd
Roswell, Georgia
Not sure if this is a physical store or not
http://www.huffingtonpost.com/2013/09/27/christoph-bloedner-bricks_n_4005566.html
Lego Arms Store (Seattle)
http://www.npr.org/2012/11/26/165574108/an-entrepreneur-expands-the-lego-universe
Brick Loot
https://www.brickloot.com/pages/northbrook-il-store
looks like these guys offer a lot of services, subscription box, led light kits, a physical store