The last thread on Sell My Timeshare Now was several years ago. Any comments?
Well unless SMTN has drastically reduced its listing fee since then, most here on TUG recommend not using SMTN. You can list for a lot cheaper here on TUG. Other cheaper options are Red Week, E-Bay, My Resort Network, Craigslist, etc.
As Ty1on has pointed out, some similar to yours are being offered as giveaways and, hence, appear to have about zero resale value. That being the case, another option would be to ask the resort to take it back. The resort might charge you closing costs but at least you can get rid of it in a legal and ethical way.