Bidding is normal per eBay, but that's not the real problem.
Payment among Germans is a piece of cake, as is shipping. However, for you to send money there and have the stuff shipped here, it could be nettlesome and a pita for the shipper.
PayPal may have an answer for this, and DHL may be best for shipping, but it will not be cheap.
Before bidding, ask the German seller if he is OK with your bidding and the consequent payment and shipping issues. Most Germans speak some english.
If he has a PayPal account, that would help enormously.