I agree with you 100% based on what I have seen in the past. At the same time, Regal Vistas seem to be getting much more exposure than a year or two ago. The last few platinum units I have seen on the market (very few indeed) were not exactly cheap, even on Ebay because they attracted much more attention and because they are really great in terms of MF/point. The days when some of them were acquired for a song may be gone.Very astute observation informed by economic reality .... however the resale market for for the high point Massanutten properties is small and there is a lack of awareness. A couple of people on this thread got some real bargains on RCI points at Massanutten. If you have patience and watch eBay, there are opportunities to get great deals under the radar. But you may need to play the game for a year or two to get such an opportunity.
I will have to add that sometimes waiting for the "perfect" price is only worth it if you do not pay more or a lot more for your vacations through the regular channels (renting from owners, Expedia etc) before you actually become an owner. If you save 300 or even 800 dollars on the price of your timeshare by waiting and you pay more for your next vacation is not a good deal in the end. This is particularity true for the high value exchanges you may get by owning.