I initially dove into an offer last month deliberately without modeling everything out. There are so many moving parts to creating a model that going with ones gut might be the best approach. After my BCV contract was taken by Disney yesterday, I decided that I'll play around with modeling some of this out for kicks prior to deciding if I am going to go after another contract.
Doing this brings up all of the moving parts that have been discussed here in trying to create a model. Assumptions on maintenance fees and their annual increase, current/future
point charts, cost of alternatives (rental cost per point and the annual change in this), discount rate, salvage value, how often you take trips to WDW, does one use all of their points, lose some, or rent some out, etc. Many moving parts that cannot be very accurately assumed as many factors can influence these assumptions. Not to mention the qualitative side- the value one places on 11-8 month booking window, not having the hassle of renting points, pride in owning vs renting and white card vs blue card, etc.
For folks who have developed their own models, what assumptions are you making about the cost to rent points as an alternative to buying? I'm using $18 per point with an assumption of 1% annual increase in the cost to rent. Not sure if this is consistent with what folks with more
DVC experience had have seen over time.
Using the most recent November data from the forum sponsor on direct and resale rates as well as information on MF's and assumptions around MF annual increases and an overall discount rate of 8%- I don't show much of a case to buy IF the plan is to hold until the properties expiration. As mentioned prior, there is a lot of sensitivity based on the discount rate used.
The case somewhat changes if one doesn't plan to hold until expiration and makes some assumptions on the salvage value (price you can sell your points at and at what point in the future). Assuming that folks plan to take frequent trips and use their points up, the salvage value seems to be one of the main factors in making a determination. Disregarding TVM and opportunity cost, and some of the qualitative factors aside, the simple way to look at it here seems to be if you can sell your contract in the future for the same or greater amount than you paid (including commission and other costs to sell) in initially and your MF cost is less than your cost to rent points would be, this is a win.
All of this is to say, assuming you will take frequent trips and utilize your points, a simple way to think about your own decision on DVC may simply whittle down to what you think the salvage value of your contract will be and when you will sell.