[Moonliner]

Certainly there is a market for overpriced goods and Disney is never one to let a dollar slip bye.

Some people like to pay top dollar for stuff. It shows a "Hey I can afford this and you cannot" type of vibe. Paris Hilton is the poster child for this.

To an extent, it does not matter what the item is just that's it's more than most people are willing to pay. You could take the price tag off the shirt and move it to another one with the same result. As long as there were not too many available. Part of what you would be paying for is having less copies on the market.