My friend bought one but only went there once for 2-3 days. I do not know what happen.
I have seen people re-sell it for $4,000-$5,000.
The question is "do you really like to go there and stay for a week every year?"
Just think about that each unit will give the owner/seller about $1 million for something costing about $100K. If money is not the issue and you like the place, you could do it.