Without any development it's not worth much.
MatchedBetting.com would be the first choice, then MatchedBetting.net/org = All taken.
MatchedBet.com is sold at HD for $2395, I wouldn't buy the .net for more than $23.95 - but only if I were interseted in Matched Betting and was going to develop it. Otherwise I wouldn't even pay reg fee, imo..