The trick is to set up a notification - there are phone apps for Craigslist that will do that, or I use IFTTT.com -- and when a winner gets posted, get over there fast and buy it, with cash in hand (take someone with you for security).We got a fantastic deal on a very desirable trailer last week just that way. 

Cost Seg and 1031 Exchange tend to go in hand-in-hand.This is a forum for "can do" winners, not for "can't do" losers.