Depends on perks offered
Now knowing TUG and learning from all advice offered, I conclude buying from the developer is simply too expensive. We have learned our lesson but very late after buying several TSs.
On the other hand, our first purchase in Wyndham was a very good deal. Extra inducements were put on the table -- in addition to the TS itself, for an extra several hundred we obtained both a 4 night and 3 night package in Waikiki Beach, HI, plus free airfare from the east coast. We were able to put together a 3+week vacation in HI, including the first 7 nights in Waikiki Beach, for the cost of one alternate-year TS in SC. Our extra costs were for auto rentals, food, and some entertainment. We visited 4 of the islands in the 3+weeks. For a 40th year anniversary, and a first visit to HI, we were delighted all ways round.
In recent years, with the economic downturn, resale prices have tanked to bottom and beyond (sometimes now people even pay to unload a TS, such as by paying next year's MF for the purchaser). In this climate, my OP is to defray some MF costs by renting. But that takes time and there is a learning curve. So far we are defraying about 30% of MFs, and using the rest of the TSs for ourselves or as gifts to family members.