Not really, you will find the occasional one here and there but Warriors is the major one, and the one that everyone goes to first...and Fire coming up behind.
Just notice the difference in traffic and you will see that it isn't very likely.
Just get a War Room membership, suck up the $20 fee to post in the classified section and you will get many orders, you proved it earlier by getting an enquiry in the first 3 minutes didn't you?
You could pay the Flippa fee and get next to no interest in it, with the Warriors Forum you have thousands of like-minded people right there who are laser targeted to put in an offer. Imagine if someone came in this forum and asked where he could sell DomainName.com, you would start to wonder what he was smoking :p
Your main aim is to build up the trust that you do actually own that domain...be creative.