WIth Paypal, you can send someone an invoice, I think. Then they can probably pay by debit or credit. Transaction fees are 5%-ish?
Otherwise, more banks have email money transfer now, but I have never used them, so don't know how they work, and if they work internationally.
Money order works too. Go to bank and ask, but your retail banks usually eff you in the ass with charges. Think I paid $5 for a $20 money transfer once at my main branch.