I was charged the $15 for flat rate shipping but when I was pricing the game up I did a dry purchase and it was $100+ for shipping. Don't know if it was because I only entered my post code and a made up address or if it was because it matches the shipping on expansions. I budgeted for $100 so not too bothered.
I did keep checking for a week or so to see if the EU warehouse shop popped up but it never did and the stuff I sold on eBay to fund it went through.
I also did an entry on a duty calculator and it came to about £60. My main worry is that a delivery guy will knock on the door and ask my Grandma for the customs fee as she would tell him to go away. 10 days is really good though I was expecting a month.
Thanks for everyone who replied.
Did that estimate include the handling fee for collecting the duty? That could easily be another 15 quid. Don't worry about the Grandma scenario--they mail you an invoice and won't deliver it until you pay the amount owed.