I'm pretty sure the rising cost on the evergreen figures is meant to help offset the storage costs for having these figures unsold at the DR warehouse.
I agree and fully believe it is to offset the cost of storage,etc. It is the only reason that makes any sort of sense. However, It still doesn't make much sense unless the evergreen figure almost never had any sales except as add on purchases on sale days.
I want NA Skeletor and Rio Blast and I want them now!