Selling on street markets in Germany with Czech trade license!

I am currently based in Prague and would like to try selling on some markets in Berlin to see how it goes, with a view to moving there permanantly. Of course i will not apply for a German trade license untill i actualy (and if i do) decide to move. Not too sure if my current license is valid for entire EU or just for Czech Republic.
Also where are there some good markets to sell new goods? I sell perfumes (originals). Do you have people selling what are blatantly fake goods there? Unfortunately for me here the Czech police allow it and so it causes me some credibilty issues.
Any help or advice much appreciated!

Hello jasoncarne.

Welcome to Expat.com!

You can read those articles about Work in Germany and Work visas in Germany. You can find helpful information.

I am sure other members will soon guide you.

Thank you,
Aurélie