Try going to timeshare users group.
Timeshare Users Group Forums they have a sales forum and they have contacts that are realtors that do not charge any upfront money. Be aware that you will be doing good to get 35-45 percent of what you paid for your points. We had a Hilton week that we sold this year at a 50 percent loss of original cost. Having said that we bought a resale Hyatt week in Key West that retails for $35,000 and we paid $5,500 for. Hilton, Hyatt, Marriott , and Windham are the few timeshares that have a active resale market. Good luck.