Bottom line: Pokémon produced a set for the first in a long time that had me get everything I needed already from the secondary market alone, rather than buying their packs.
I feel the same way -- the combination of the increased prerelease cost and the removal of cards I was looking forward to from the set has me second-guessing my prerelease plans and regretting the box I preordered. I'll probably end up buying DEX packs (or DRV blisters) when I go to league after the official release.
The prerelease thing is somewhat ironic, since if nothing else this should be a much better drafting set than DRX.