I remember when Eq2 had about this much stuff in the cash shop, it slowly but surely became 50% of the production was cash shop exclusive. It started the same way back when it was still a sub game.

I wouldn't go so far as saying having a cash shop is the end of the world, but on a sub game nothing in a cash shop should be exclusive, every item in it should be available in game, be it rare drop or time consuming quest. Cash shop imho should be a shortcut for non-p2w items.