that is why you buy resale and only if the person selling is willing to meet your offer.
they can offer their timeshares for $10,000 - but it is really worth $2,000 - offer $2,000. You might be turned down a couple of times. but someone will take it.
www.tug2.net is a wonderful place to see what timeshare are really worth.
NEVER, NEVER, NEVER buy from a developer.