Why are shower heads so expensive?

I recently stayed at a Holiday Inn in Washington, DC. The shower head was a large square and was like standing in the rain, called Rainshower. It was sooooo nice. So I went online on the Moen site and saw shower heads (just the head) for just under $1000 list, but $722.00 sale price. The one in the hotel lists for $375 and sells for $280.

My question is, why are they so expensive? I'm sure they use quality materials, but come on! I assume after years of use you'll still need to descale them. Anyone have an expensive shower head and are you glad you spent that much? What did you buy?