Dues cover such things as your resort operating costs (e.g., all the employees at the resort, maintenance,utilities, insurance, many others), reserves for future capital projects (major repairs, roof replacements, others), and property taxes. They usually rise as the years progress because such costs rise as the years progress (e.g., employees do get raises and taxes go up). For the history of dues per point per resort go to the DVC Resource Center sticky on any main DVC thread page on this site, which is near the top of the listed threads. Both Vero Beach and Aulani have two classes of owners because certain owners purchased before a particular adverse event became known (underestimating needed dues at Aulani when it first went on sale and not building remainder of resort at VB and disposing of land) and, though I am not certain, I believe the lower dues paid by the earlier purchasers will not apply to a resale purchaser. Otherwise, each owner of a resort is annually charged the same per point in dues.