I have used this in the past and got something else, which was better, but never used it and can't even remember its name?
https://selz.com
i think I would be tempted to use Paypal and charge them the commission fee (2-3% should cover it). You will find that they can suddenly come round and pay cash, send a cheque, go to a bank and do it, or spend about 30 seconds working out how to use online banking (which is the easiest thing I have ever come across).
If they actually have a PayPal account, then they can also send you money as a gift, but not sure on the legal implications (for a one off I don't see it as a massive issue). I have just done this for a set of microphones on Facebook, lets hope he send them LOL. :)
https://www.paypal.com/uk/webapps/mpp/paypal-fees