Bundle Price

Hi! So I have a small suggestion for the bundle price which I think is unfair.
(I live in Norway, so the I'm gonna use my currency, kr.)
The expansion packs costs 399kr, except the new ones which are 469kr.
The game packs are 199kr and the stuff packs are 99kr.
It says I will save 28% if I get a bundle, 767kr to 547,93kr.
If my math is correct, I will save 28% if I get one of the newer expansion packs, and less if I get one of the older ones. (Not sure how much)
Is it possible to chance the prize depending on which expansion pack you get?