Beer Exchange?!!! This is hilarious but exciting to visit. Your description make the Berliner Republik a place to want to visit: 'The funny thing about this bar is that the beer prices change dynamically and the prices are offered on the TV displays. It is an beer exchange so demand and supply set the beer price. A beer could be 1.30euro and one hour later be pumped up to 3 Euros.'

It's an experience worth having. I look forward to it when I visit next year.