Look at the
DVC resale link at the top of this page. Basically, with resale you are responsible for closing costs (around $500) It takes a bit longer sometimes. DVC as Right Of First Refusal (ROFR) meaning they can buy it out from under you if they think you are getting it too cheap (seems to be very arbitrary on their part) You have to get your own financing.
Otherwise it can be a great deal and you can get more points than you could by paying full price through Disney.
Just make sure you look at the status of the points before you dive in...all sales are not equal (buying a share that has already borrowed and used next years points Vs. a same quantity share that has last years banked + this years available)
Time Share Store has a lot of excellent reccomendations from these boards...talk to them and to us and see what works best for you!