I just went to my Plant Tycoon game on my hx4700 and checked out each fountain (buying them, in turn, and then resetting my PPC). The fountains in the nursery don't match the pictures in the shop. The first one has only one tier at the top, the second fountain has two tiers, and the best fountain has all three tiers. You didn't get ripped off!
I guess I just never paid that much attention to the mismatch of the pictures before.
I've attached a screenshot of the second fountain, so that you can compare your fountain to this one.