This is for California, so take it with a grain of salt if you are elsewhere, you have to get approval by product to sell anything.
My LHBS (Home Brew Mart) is also a brewery (Ballast Point). At the back of the shop, there is a tasting bar where you can get $1 samples of anything Ballast Point is making, or free samples of experimental recipes or sometimes stuff that the brewers or shop employees have made at home. They are not allowed to charge for the off label stuff.
I was also recently chastised for bringing homebrew into Stone. Not that it was a problem to bring it in, but that it was labeled.
One last bit of related Cliff Claven-esque worthlessness. The first couple years of Stone's RIS was just "Imperial Stout". They couldn't get label approval for the "Russian" because it didn't actually come from Russia! They eventually prevailed, Obviously, but it took a lot of work.
Our Government, hard at work protecting us from certain doom!:cross: