T-Shirt prices?

What are the prices for Wacken T-Shirts (with all the bands listed on it)?

A couple of friends of mine want me to buy them, that's why I'm asking.

 

I think something like €15

 

Can't remember exactly, but think 15 or more, should be less than 20.

 

Aye, it was around 15 Euros last couple of years. Might have increased this year but should be no more than 20 Euros.