"If you think a professional is expensive wait till you try an amateur." - Henry Ford

"The customer buys for his reasons; not yours."

"You will get what you want only when you convince the customer he will get what he wants."

"Don't sell the steak; sell the sizzle."

bank transfer

I just have my euro paid into my bank account. All you need do is let your client have your bank details. Easiest way. Pop into your bank. Ask them for the account information you need to give him. All he does is either go into his own bank, or on-line, and transfer. As far as I am aware it is free and at the exchange rate as of the day.
Alternatively, I leave some euro in Spain . . . always useful as spends when I am there. Good news earning in euro. Not so the pound; next to worthless.