I think Hermes is cheaper in Europe, except maybe the UK. I heard that in the US it's more expensive.
Shu - The color is actually more vivid and darker than the picture! It's really a cool fuschia/magenta color and goes well with many shades, of gray, blue, black, beige, pink. The SA and I tried with the different scarves on the store to see with which color I can wear it with. It's also perfect for jeans!
happy1 - I don't think there's a limit on the VAT refund but there's a minimum purchase to get the VAT refund (the minimum amount depends on each country).