In checking this place out on the BBB site, it appears they are the middle man for renting time shares. As a owner you wanted to use their services, you pay up front(which no one in there right mind would do) and they make the offer to people (such as you) that want to rent. There was no mention of any cost to "rent" so don't be surprised. It was clear that as much the same on sites like Red week, TUG, and all the other sites, IT IS SUBJECT TO AVAILABILITY.
All that being said, I wouldn't put all my eggs in that basket. Do your home work and see what the rentals offered on the afore mentioned sites. If they want a cut from you besides the rent,............I'd run
William P.