I think others have given you most of the advantages of buying
DVC. I just have a couple of comments on the purchasing process itself and some cons of DVC ownership.
Direct vs. Resale:
If you buy direct from Disney, you'll pay between $99 per point and $130 per point (I think -- someone correct me if that's wrong) depending on which resort you buy. There are often "incentives" that bring the cost of some contracts (mostly BLT) down somewhat...but it's down from a lofty peak!
If you purchase resale, you should save 15-50%, maybe more, again depending on where you purchase.
That's a huge difference. I'd be extremely hard-pressed to come up with any coherent argument for purchasing direct.
Sure, there are some outliers
("I only want to buy 25 points with an April UY at BLT, and I can't find it immediately on the resale market..."), but for the most part you're going to pay a LOT more if you buy direct. And if you buy direct and finance, you've REALLY raised your cost substantially.
Cons of DVC:
Let me say first that I think DVC is an exceptionally good timeshare for visits to WDW, and we enjoyed our ownership greatly. If you are going to visit WDW at least every other year, and you want nice accommodations ONSITE, DVC is hard to beat
for that one specific purpose.
However...there are several downsides.
The first is that DVC is
among the most expensive timeshares around, both in terms of initial buyin
and in terms of the per-night costs of using your points. If you visit WDW regularly, you should save money over paying cash for
Disney onsite lodging, but it's certainly not a bargain vacation.
For example, I recently did some comparative pricing using DVC points for a May stay in an OKW 1BR vs. the same accommodations at Wyndham's Bonnet Creek Resort using Wyndham points. There was a flukey quirk about Wyndham that gave us a better price, but if I ignored that and calculated the "regular" Wyndham cost, it came out to $189 per night at OKW and $60 per night at Wyndham (our
actual Wyndham cost was $40 per night). Huge difference -- and it's not only the initial buyin cost of DVC (our buyin was at $73 per point), it was also the number of points per night and the difference in annual dues.
For comparison, if you are interested in timesharing generally, you can purchase many very good timeshare products on eBay for $1 plus closing. Last summer, we purchased the rough equivalent of a 500-point DVC contract (Wyndham) for a
total of less than $2,000, including closing costs.
The other drawback of DVC -- to me -- occurs when you decide to vacation anywhere except WDW. Yes, there are other DVC resorts, and they're wonderful. Yes, you have access to a limited number of RCI exchanges (about 600 of the 6,500+ RCI resorts). But using DVC points for other options is really limited and relatively more expensive (usually) than using them at WDW.
The DVC timeshare salesmen try to portray DVC as a one-stop program for ALL your vacation needs...but it's really not.