He has a history of refusing to deal with escrow, even when the amount in question is very small ($50).
Someone had suggested several escrow services, and a few people said that any of the recommendations should be trusted with $20,000 worth of escrow, however I would say that most of the people that were recommended probably should not be trusted with that large of an amount, but OgNasty is someone I would personally trust with that much money if that was something I needed to do to get a deal done. Although I cannot guarantee this, nor say with 100% certainty, however I believe that the chances of OgNasty pulling off an exit scam are fairly small.
Also:
Regarding escrow, if you are serious about getting this done, then I would suggest OgNasty. He is currently holding over $240,000 worth of bitcoin. He also recently released 130BTC in an escrowed deal for a bunch of miners which is almost triple the amount of your proposed deal. I would personally call it ridiculous to think that you wouldn't be able to trust him with $20,000.
Bottom line is that a paper trail of a transaction is not going to protect anyone against you scamming them, the same way that the trail that the blockchain leaves is not going to protect you from a scammer.
Bottom line is that a paper trail of a transaction is not going to protect anyone against you scamming them, the same way that the trail that the blockchain leaves is not going to protect you from a scammer.
. You did not even have a buyer before sending the message either...amazing we all said no.