Hi Nick01, I know how you feel.
Looks like a really nice headphone, and I for one would like to purchase one, as well as a set of RS1is. Unfortunately in the UK, we are in the same boat as other overseas customers.
A recent article in whathifi http://www.whathifi.com/news/grado-adds-high-end-ps500-headphones-to-its-professional-series states:
"New from Grado is the PS500, the latest model in the company's Professional Series range.
At £700, the...