€15 for a transfer is outrageous. When I was paying for my PC through a bank transfer (Ireland -> Germany), I was offered two options from my bank. The "quick" option, which is €20, and money is sent instantly, and the other bank receives it instantly. I was also offered the "normal" option, for €0.75, which basically means the bank sits on the transfer for a couple of days to make me wish I'd payed for the expedited method, and then sends it. But €15 shouldn't be the minimum price
There's always another way though, so good luck