Larger bikes can be a real pain to find on the c-list. I've looked for a long time and found nothing that fit me. I ended up getting a Trek 7000 from a LBS because I couldn't find anything that would work. Make sure the bike fits though, I was talked into getting a smaller bike than I should have and it caused no end of headache. If there's something in your area like recycle-a-bike it may be a good source. That and a guy two towns over who fixes up used bikes are the only two decent resources for used bikes where I am. If I were 5'10" it wouldn't be an issue.