The short and sweet answer is - if you go to WDW every year and stay in a moderate or deluxe resort and would like to have a true home away from home with kitchen, bedrooms, laundry, etc.; yes it is worth it. If you stay typically in value resorts or offsite or don't go every year; no it is not worth it. Also, if you an planning on buying with trading into RCI as a major part of your plan or taking
DCL cruises often on points; it is also not worth it. As far as websites for information on DVC, THIS is the best website to go to.
The above sums it up quite nicely. Will it "save" you money ? That depends on where else you would stay. Staying offsite will always be cheaper, so if staying offsite is not a problem, then there are cheaper ways to get your lodging. For us we love being onsite, it is worth the premium (to us) to get to the airport and be completely submerged in all things Disney for the whole trip. Everyone's situation is going to be a bit different based on your preferences and vacation habits.
When we were deciding, I compared the cost of buying in to the next best alternative - continuing to rent ressies from dvc owners for our trips. Living just outside of Chicago, I doubt we'll ever make multiple trips in a year, and more likely to go 2 out of every 3 years. Some will compare the cost vs rack rates, but I don't think that it is realistic for us to do that as I would not be staying at a deluxe resort if I had to pay rack rates. We've stayed at 2 DVC resorts renting points, a 1BR at BCV, and a studio at SSR on a "last minute" trip last year (found out DW was pregnant and wanted to get one more trip to WDW as a family of 3). After these trips we thought about how nice it would be to own dvc, but always figured it was wayyyyyyyy out of our price range.
We then discovered the magical world of resale, which not only gave us the option of buying in at a lower price/point, but also smaller contract sizes if we wanted to. Our 2 previous trips we did split stays, staying at POP on the weekend and a DVC resort Sun-Thurs nights to avoid the higher weekend point requirements. The split stays were fine, but we ideally would've loved to stay at the same place for the entire trip (just get to the room and unpack without worrying about switching resorts in a few days). As a ballpark figure (will change based on resort, view, and season), we figured that a 1BR for a full week is somewhere around 240 points. If we go 2 out of every 3 years that would mean we need a 160 point contract (ironically the min buy-in direct thru Disney). The 160 point contract gets us 480 points every 3 years, allowing us our 2 240 pt trips utilizing banking and borrowing.
Started looking at the various resale sites (including the sponsor at the top of the screen), and found that I could get a 160 pt SSR contract for about $12K including first years MFs and closing costs. When I compared the $12K up front cost, annual MFs, AND the time value of money (some people forget to include this but it's critical in the analysis), I figured that depending on inflation, increases in MFs, point rentals, rates of return, and increases in the cost of hotel rooms, that my break-even is somewhere in the 10-14 year mark.
By break-even I mean comparing the 2 alternatives of keeping the $12K in the bank and earning a decent return, and using those funds to rent ressies for all of our trips vs buying in DVC, and paying the associated MFs each year. Somewhere in the 10-14 year window the $12K would've been all spent (the hypothetical "vacation fund" for lodging) if we just continue to rent, and if we buy in we'll still at least have our membership that will have some value to it. HOWEVER, I also needed to factor in that we would've paid about $7K in MFs over that same time period, so to me I'm "even" if my 160 pts are worth at least $7K in 10-14 years.
That's the financial side of it, but there are other intangibles that can't really be valued. First, there's something to be said about controlling your own reservation as opposed to renting from a member. Although my experiences renting have been great, it's worth *something* to me to be able to call MS myself and book a trip or make changes as needed. Second, DVC won't "save" me money, but will allow me to spend more or less the same and stay in much nicer accomodations. For the money I'd spend staying in a mod or maybe even a value, I can get a much nicer and bigger room. Third, it gives us the chance to get a room big enough that we'll be able to take friends/family with us without it breaking the bank.
By the way, I'm waiting to hear back on whether or not I "pass" ROFR (right of first refusal) on a contract that we made an offer on - so in case the novel about didn't sum it up - yes I think it's worth it. In addition to being a great price, it also came "loaded" with bank points that I'll rent to bring down my cost basis. If all goes as planned, we're going to bank this years points and have our first trip "home" next May, and bring along Grandma and Grandpa. Without DVC I would've had a hard time paying $3K out of pocket for lodging on that trip (either 2 rooms at a mod for a week, or renting a ressie for 2BR which is around 320 points), knowing that once we check out that money is just gone, so I figure that our membership will already start paying off. In addition, there's also something about being "forced" to have family vacations at a place we all love (DD at 5 months already smiles everytime she sees Cinderella's castle on TV so I know she's gonna be a Disney lover), and the thought of all of the family memories we will have is PRICELESS to me. Our kids won't be young forever !!
So in summary, I think on the financial side DVC works for us (not using this as an investment - don't expect it to "make me money" - but also see it as making sense vs the alternatives). Plus, I was incredibly fortunate growing up to be extremely close to my grandparents, and my son and daughter are just as lucky, so to me having the chance to have 3 generations go thru the turnstiles at MK together and the memories that come from this trip is almost worth the cost of my resale all by itself.
Others here will also be able to provide additional input (as they're much more informed on DVC than I am), but this is just my view. Please make sure that you take into account all of the different opinions here (both the good and the bad) when deciding on what makes sense for you.
Good luck, sorry for the long-winded response,
Chris