Another DVCer chiming in.
We bought in 1996. I honestly don't remember how much the points were, but I think they were somewhere around $50 per point "back then."
I've heard of good deals from resale places, but remember. DVC has the right of first refusal (ROFR) and if an owner tries to sell her/his points at too low a price, DVC will buy them back. They keep the value up that way, eh?
Also, you can bank or borrow points. That means that if you are not going to use all or part of your points in a given year, you can bank (again, all or part of them) them into the next use year. Depending upon when your use year starts will drive the timing for banking the points (you have to bank by a certain time in the year).
If you want to use more points in a given year than you actually have for that year, you can borrow from the next use year. That will of course, leave you with less points for that upcoming year.
The most points you can use at any given time are three year's worth. It's done like this. In a three year span: Year one, bank all the points into year two. When you are in year two, borrow all the points from year three to use for a vacation (safari anyone) in that second year. Got it?
You can use the points in many places throughout the world.
It's incredibly flexible, and with some small exceptions I've had incredibly good luck booking spur of the moment.

Years ago when Hurricane Jorge was headed for the west coast of FL (we were living in Ft. Myers) we wanted OUT! I called DVC and got a villa at BWV. Then I called back and changed the reservation (increasing the time)!!! All in a few days time/notice.
Same as this weekend. Spur of the moment and voila, we are staying at OKW for Gay Days.
OKW is our home resort. It's the original vacation club. There was only OKW and BWV when we bought in, and BWV wasn't finished yet. Funny too, BWV is my least favorite DVC.

Not that I refuse to stay there, but I like the others much better for many reasons (one being that hideous clown pool).
OKW has some lovely quite pools that are quite private.
We are looking forward to staying at Kadani Village in October, and to our annual trek to Vero Beach in August.
Even for all my disallusionment with Disney over the years, I'm still a dyed in the wool lover of DVC.
Oh, one thing that some folks don't like. The contracts end. There is the right of inheritance, but the contracts will come to an end and if you are still around, you'll no longer be a DVC member. I think ours expires when we are in our 80s.

I'm not really too worried about it!
Do take the tour. Seriously, there is absolutely no hard sell. The guides will tell you themselves that DVC sells itself. They explain the program and leave folks to make up their own minds.
Our guides name is Betty Prykryl. There are loads of good guides though, so you can easily turn up and learn all about it. Plus, the model villas are wicked!!