What is their commission to sell the stuff?

I do not know of a store at the Berlin Farmer's Market that sells anyone else's stuff for commission. Basically the Farmers Market is made up of 2 sections: First is a building kinda like a strip mall with a bunch of stores inside that are always there year round. There is pretty much every kind of store you can think of. Then the Second part is the outside area. This is a very large space as well that is set up I isles basically. And how outside works is like a neighborhood yardsale but some vendors are there every week, and others are not. You pay to rent a space on Sat or Sun, and thats it. Hopefully this gives you some idea of what this place is. Oh, and it is not all used items, some are, and a lot of other vendors sell brand new stuff. It is a great place to walk around on a Sat or Sun with the family. They have things for everyone. They even have food vendors all over inside and out. And recently they add a beer garden that I saw the last time I was there (which was 9/15/18).

Call them to find out about that