There are also a few that split the annual cost in two but then throw in a "convenience fee" of $25 or so for the privilege of owning an EOY.
Also keep in mind if you have an exchange membership (RCI or II) you will likely have to keep the membership active both years in order to use the deposit AND resort systems that have an annual membership fee (usually points systems) require owners to pay the full annual membership fee/program fee (Blugreen, Hilton, Wyndham, Marriott, Vistana, etc) even if they only own EOY.