Ok so for my reservation in December that I have right now... Two studios for three nights, online if I booked right now would cost me $4570. I have an annual pass so don't need tickets. I will drive there so no airfare. Pretty much no package options out there other than to pay cash.
How is buying not cheaper in the long run?
Eta make that 4950.
Assuming you book 2 Studios at BCV for 3 nights during peak holiday season. Since Christmas is a Wednesday this year, I'll assume you begin the 26th (Thursday, Friday, and Saturday nights).
Cost of rooms from WDW
$597/night (BCV Studio) X 1.125 (tax) X 3 nights X 2 rooms = $4029.75
(Note this matches the rate I was quoted from disneyworld.com)
Cost of rooms in MF
Points required: 25/night weekday, 28/night weekend
2013 MF: $5.6458/point
(25 + 28 + 28) X 2 X $5.6458 = $914.62
Savings per year
$4029.75 - $914.62 = $3115.13
Current cost to purchase 162 points direct
162 X $130/point = $21,060
Number of years to reach break-even
$21,060 / $3155.13 = 6.67
The above numbers are simplistic, ignoring inflation, investment, and closing costs. I have a more sophisticated Excel spreadsheet that takes into account all factors. Putting in what I consider reasonable assumptions, this comes to 7 years; 9 years if I want to assume a strong investment.
If financing, the total cost of financing can simply be added to the purchase price.
If renting points at $14/point, the break-even point is at least 15 years, depending on what capital return is assumed. $14/point represents pretty much the peak rental rate today. It's often possible to rent points at $12/point or less.
Note that I did not calculate using a "Room Only" discount since these usually are not offered for the period in question.
Generally speaking, purchasing
DVC is the least expensive way to stay at a WDW Deluxe Resort long-term but requires tying up investment capital and some risk. Renting points is the least-expensive low risk way to stay at a WDW Deluxe Resort. Renting directly from Disney is the most flexible since rooms are nearly always available on short notice. (DVC has a much higher occupancy rate.)
Which is "best" largely depends on how you weigh these options.