The store is supposed to automatically not show us items we already own or can't use. Most of the time this works fine, even if it can be annoying (like a year ago, when the free sample of the week was a valuable Scroll of Relic Removal, yet I wasn't allowed to claim it because I had no characters high enough to see it in the store).
However the Eriador Bundle is still showing up for me despite having long ago bought every Quest Pack in the game, so accidentally purchasing it would give me absolutely nothing and at a huge cost. I know well enough to avoid it, but that could be a very expensive 4000 TP mistake for someone who was less wary.
Can you please look into this issue?