The primary reason that BLT dues are so low--by a long shot--is the inflated
point charts in comparison to other resorts.
The 2009 budget for BLT has total operating expenses, taxes and reserves of $5.6 million. Those dollars are shared by approximately 1.53 million DVC points.
If the BLT point charts were more in line with the likes of BCV and BWV, there would be 15-17% fewer points in circulation. That would reduce the total ownership to 1.27 million points.
Take the same $5.6 million annual budget and divide by only 1.27 million points and the dues would instead be approximately $4.41 per point which is in-line with other destinations.
Again the ONLY reason for this disparity is the larger number of points. A higher
point chart allows DVC to sell more points up front and earn a higher return on the building. But the property's actual operating costs should be the same regardless of whether DVC puts 1 million, 10 million or 100 million points in circulation. The difference is the portion of dues shared by each point.
VGC is the same way--higher points per night, lower share of the dues burden paid by each point.
For a BLT owner using points at his/her Home, the values are irrelevant. Higher charts means lower dues, but it also means more points per night for each stay at that resort. But in comparison to other resorts, it's quite a bonus to pay only $3.67 for a BLT point and then use it to stay at a resort like BWV whose owners pay much higher dues.
If you scrutinize the line items of each resort's budget, certainly there are variations. Some are obvious and easily explainable (AKV only resort with savanna expenses; SSR with higher transportation budget than VGC). Some have more to do with the style of resort, durability of furniture and fixtures, quality of construction materials and so on.
BLT dues are currently 25% lower than AKV. Barring something truly unforeseen and unprecedented in the history of DVC, that gap will never close by a significant margin. One year we may see AKV increase by 3% while BLT is 5%. But those small annual variations would have to compound for many, many years in order to overcome the underlying differences in the dues basis for each resort.