The deadline for the registration for the 29th German Open Championships is June, 30th, 2015. The fee will be €30 per couple. As of July 1st, 2015 you will have to pay €40 per couple. So log in before the registration deadline and you will save money.
In case you cancel your competition participation, reimbursement of entry fee is only possible until June 30th, 2015 (registration deadline).