Check Redweek to see if there are weeks for sale at your home resort to get an idea of asking prices. Though, in looking these over, I think the asking prices are very high. I didn't see any recent sales on ebay.
Buy a timeshare directly from Grand Solmar Land's End Resort owners, starting at just $1,000. Resales are almost always 30 - 50% cheaper than buying the same unit from the resort!
www.redweek.com
Sell My Timeshare Now is where the truly delusional asking prices are:
Grand Solmar Land's End Resort And Spa timeshare resales available. Find Grand Solmar Land's End Resort And Spa timeshares for sale by owner - search by price, week or check-in date! Buy Grand Solmar Land's End Resort And Spa timeshare now.
www.sellmytimesharenow.com
Scroll down and ask about the "resort in your profile" in the Mexico forum. There may be other owners who can tell you if you're just going to be giving it away and/or stop paying the fees.
Here is a thread, see posts 2, 6 & 7 for info:
Need some input from Tuggers here. We recently visited Cabo and stayed at Grand Solmar Land's End and had an absolutely fabulous time - we have stayed at many Mexican resorts and think that GS probably had the best balance between cost (for us to rent) and resort quality/amenities. The staff...
tugbbs.com
The transfer fee is the killer.