Yes we met in person, he handed me the cash and I handed over the necessary info for him to use the credit. He got a good deal, I got the credit sold, win win. I had several emails though, asking to pay with paypal, since "they are out of state" "this will make it easier for both of us" etc etc. I just stated I was firm on the cash only policy and it worked!
Some people will be no-shows, but I actually talked to him on the phone before the meeting and we discussed where we would meet, etc and I felt confident about it. If nothing else, if they don't show, you're only out a little time, rather than a bounced check and a mess of a bank acct. But most people will feel they are getting a good value for their money and will show if serious.