Yea I'm always skeptical of such stories. It could be legit, but It just doesn't pass the smell test for me. Too many illogical pieces to the story. Could be 100% legit but I would want to verify the legitimacy. Ask for the dealer purchased from and call that dealer for example. The LX3310 has 4.2 inches added wheelbase, sits just 3.5 inches higher, is 4.7 inches wider, and weights just 286lbs more than the B2601 - They are so close, I just dont understand why you would take an economic loss, and go through all the hassle involved, just to step down that little bit in size. I also question why you invest so heavily in a nice new trator before even securing the said new property. Again could be 100% legit, but I have seen people be scammed on equipment forums. I could tell you some crazy stories of how this stuff happens. You have to be careful. If the seller is 100% legit he will understand and will go the extra mile to verify everything, including giving you information that would allow you to independently verify his claims.
EDIT: just want to be clear im not attacking the OP, I just have seen some folks really hurt with scams in the past so I try to be a voice of caution. If you are legit then you will have no trouble finding a buyer eventually and I hope it all works out.