Tug is a great group of people and they know everything about timeshares.
My impression of their buy/sell board is that it’s normally for discount properties so I’m not sure how DVC fits in there.
What I do know is that they are all experts and knowledge is power. If you go into a transaction with someone on TUG and you’re not 100% sure about what you’re doing and how, then they will be at a distinct advantage over you in the transaction.
Just make sure you know why every part of the transaction (who’s closing, etc) is being done and why.
I think they’re by and large a good group of people and just like here, buying from someone who’s a frequent poster means you probably won’t get scammed. But just like anyone, they’ll take advantage of whatever knowledge leverage they have.