Worldmark units aren't deeded into Club Wyndham at all whatsoever. You are exchanging between clubs using Club Pass. They can't legally restrict you from Club Wyndham resorts, just the Club Pass locations. If you like Worldmark and Wyndham, just buy into both clubs resale to get access to all of their properties. WorldMark is a lot easier to understand how to buy. You want to have a perfect multiple of 10,000 points because of housekeeping credits and the more you own, the less you pay per thousand. With Club Wyndham, you want to have at least 233,000 points deeded to a low maintenance fee resort because of the program fee. I would suggest buying Club Wyndham resale first at a low maintenance resort, then assessing if you need Worldmark credits added on. 10,000 WM credits = 165,000 Club Wyndham points. That's what I did and am doing.
Retail purchases are always going to be a gamble. It's how Wyndham makes the majority of its profit, so in most cases, it isn't financially in your favor. Resale owners also do get unit upgrades and point discounts. We're just last in line. Upgrades are rare, but point discounts are super common during the slow season. I got a Bonnet Creek upgrade in September '18 to a 2 bedroom unit and I also have gotten 35%-40% off at Bonnet Creek, Reunion, Panama City and Avenue Plaza this year alone. Here are some current discounts in Florida that I just searched as resale:
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