You have to pay a $50 fee to have ticketless travel funds extended, same deal as with RR tickets. I think that gives you an additional year from the date of original purchase on travel funds.
I think I'm going to suck it up and pay the darn $50 fee to extend a RR ticket for a year... and I really only need about 2 weeks.
Paying $50 to extend a $60 credit doesn't make a whole lot of sense for the OP though.
I've heard that SW has gotten pretty serious about monitoring sales of travel funds and RR tickets posted online lately. If you don't have a friend or relative you can work something out with, maybe list it at a reasonable buy it now price, and hopefully you'll find a buyer before it gets pulled?
Good Luck