I checked EBay US, and VAGTeam has the same price for all countries .... $4.99 US starting bid, or $9.99 Buy it Now, plus $25.00 US for shipping to US, or Canada, or UK. I paid $4.99 US plus $25.00 US shipping, and figure you should be charged the same.
I bought and really like the spoiler .... perfect colour match, perfect fit, and not too obtrusive. I had it shipped to my daughter in Boston and picked it up there ... with freight, it came to about $250 US.
EOS is also expensive here in Canada, where I live but not quite as bad as UK. For Sport model, leather upholstery and a few extras it is about $40,000 US.