Another way to do it, is to provide enougt material to the buyer for him to be able to make a legal action against you if you do not delivery what he bought.
It might be enought for a buyer to thrust you.
I simple way to do it is to mail, fax and/or send an email (from a pre-verified valid email address)
an invoice or similar document, proving that you just sold the property.
make sure both names are on the document, including full address, phone etc.
A witness would be a good add to it
and a copy of your driver licences numbers. etc.
Much cheaper than Escrow and it should work many times.
Never delivery before getting the money.
I hope this help a little.