I am sure that, for the time being, while the WW is still so very popular, merch in other areas has slowed or stopped being produced and sent to the stores. They know they won't sell out of JP shirts any time soon. Universal will definetely figure out all the best ways to capitalize.
--- Update ---
Yeah, Zonko's has A LOT of really useless merchendise. nothing I would ever buy even though I love Harry Potter. Why do you need a remembrall of sneakoscope that dosn't do anything but light up when you press a button?
--- Update ---
People are the last ingredient in a theme park addition, and a very important one. They will solve what they can in the next few months. Including the unforeseen disasters that FJ might become right? This is what creates a theme park. It is why there are no skipper tours as it didn't work. AK... no boat tours, didn't work. No actors in JP... cost too much didn't work. Watch the products that disappear from Zonko's and other shops over the next year. If it doesn't sell, no matter how much you love it, it will be discontinued. I predict mini-chocolate frogs in mini boxes will be a new product.
Yeah, Zonko's has A LOT of really useless merchendise. nothing I would ever buy even though I love Harry Potter. Why do you need a remembrall of sneakoscope that dosn't do anything but light up when you press a button?