Selling a Tax Lien To Another Investor

[Account Closed]

I have a Florida tax lien that is mature, but do not want to apply for the tax deed myself. I listed it on Craigslist and someone is interested in purchasing it.  I understand the paperwork at the County level to transfer the lien to this investor. I figured he could pay me via PayPal and then I would transfer the lien to him, but I think the buyer is a little nervous that I might "take the money and run."  Anyone know of a way to make the exchange where the buyer can be reassured that he will receive what he paid for?