Royal Mayan is a TS and part of the Royal Resorts-Royal Carribean, Royal Islander are known as the tri- royals because they are close together. Wonderful resort, very clean,friendly staff with onsite restaurants,mini mart and travel agency,multi pools.
We went in 2003 late October and the weather was wonderful in the 80's. Mayan is cozier than the others,lots of activites ,tram takes you to the other Royals. Bus system nearby.
Xcaret eco park ,Tulum Mayan ruins,water sports,snorkeling,shopping,gorgeous aqua blue water and limestone white sandy beach. Not sure how wide the beach is after the hurricanes.
Not sure what you mean by the cost... to buy,to trade or to rent?