4x4 or 2wd?  Loader or no?  Pics and more information will help.  TC30 is a great tractor.  I had one as my first tractor and it was a faithful servant.  
You'll get more money selling outright.  Typically you could sell for at least a grand more than your trade offer in one day with a craigslist ad.  Quick sale, a few more bucks, minimum hassle.  Some people aren't into that and I understand.