Hi and welcome to TUG!
It's a scam...
Reputable resale agents charge commission after the sale and take their fee out of the proceeds...they don't charge the seller any upfront fees.
Some resale companies sell timeshares and some just sell ADVERTISING and have no intention of every actually selling your timeshare.
Here are some warnings signs with these kinds of companies:
1) Do they say that they already have a renter/buyer for your timeshare? (or an established market like people attending conventions.)
2) Are they offering to rent/sell it for far more than the market value?
3) Do they want you to pay a large up front fee?
4) Do they want your credit card number before they send you a contract?
5) Do they claim that you, the seller, have to pay for taxes, closing, a title search, or other fees in advance?
If you answer yes to any of these questions, then this is the usual scenario:
Once you pay the fee and receive the contract, you discover that the company has only promised to
advertise your resort, not to rent/sell it, and they don't mention having a renter/buyer in the contract.
Then, you won't hear anything from them for a long time, and when you contact them, they will tell you that the renter/buyer backed out, but they will advertise your timeshare on their over-priced website.
Finally, when you try to get your money back, they will point out that you signed a contract, and it's only for advertising.
When you try to challenge it with your credit card company, they will tell you the same thing. - You signed a contract for advertising, and it's too late to dispute the charge.
To find out the real resale value of your timeshare on the market:
1) register for ebay
2) search for your resort by exact name
3) click on "completed auctions" on the left
4) the next page will show you what your timeshare is selling for.
Good luck!