We are thinking of buying a DVC membership. We've also been looking at resells and are wondering why OKW points are usually $10 less per point than other DVC resorts.
One reason is that OKW normally has availability at the 7 month reservation window for most times of the year, so home resort priority is not that important for OKW. The BCV, VWL and BWV fill up during key times of the year, making the 11 month window more important for those resorts thereby making it more important to own at one of them if you want to be at one of them during popular DVC times. You can own at BWV and still get into OKW at Christmas. You can't own at OKW and get into a standard view at the BWV for the same time.
Another big reason is location of BWV, BCV and VWL. DVC is real estate and you know what they say about location when it comes to real estate.
A third reason is size. OKW is a big resort that was the first DVC. VWL and BCV are much smaller in comparison. It comes down to supply and demand in this case. The same could be said for BWV standard view rooms. There aren't many of them but you generally need BWV points for many times of the year to get one.
HBC gave a great answer. My first inclination is that there are just a lot more members at OKW than other places, so more "competition" selling at any given time.
There is one other consideration. OKW was the first DVC, and many bought points there for less than $60 per point. By contrast, most of VWL and BCV sold for $70 - $85 per point. I'm not sure about BWV but it was probably in the $60's most of the time it was selling.
So OKW owners had the chance to purchase for $10 or more less per point than other DVC owners. Since their cost basis is lower, and add in all the OKW contracts due to large size, and you might end up with economics that allow for a lower resale price but still the same "margin" as other, newer resorts.