I sold Ownit.biz for $2500 and the next day Ownit.us for $1500 (Same company).
http://www.dnjournal.com/archive/domainsales/2004-expanded-newtld.htm
I have sold quite a few in the $200-500 range as well.
The market
always determines value.
We can all hypothesize that this extension is great and that extension sucks...
I find that if a businesses wants to get on the internet they are prepared to go with any viable extension to do it.
I had a business owner, who bought a .biz name from me, tell me that before he would pay what the @#$%^ that owned the .Com wanted he would buy the .BIZ and spend some of the difference (which was a lot) advertising his .Biz website. I thought that was pretty good logic.
He wasn't looking for type-in traffic from France or Canada (didn't even know what it was)...He wanted people from his state that were interested in his product and was prepared to spend some of the money he saved to go and get real money spending customers.
Bottom line...type-in/rev names don't mean anything to most small business owners that I have spoken to. They want a web name that matches or describes what their business is about.
If you don't get greedy and see your customer's need, you can turn a decent profit on good names.....
If you expect too much you will end up with very little...
Works for me....