Ask HN: How much was your largest cellphone roaming bill?

We launched YouRoam today for Android to eliminate roaming fees and help you make calls over WiFi/3G anywhere in the world using YOUR phone number. We would love hear about your most expensive cellphone roaming bill. We will interview and feature those with the highest bills and they will receive unlimited free calls on their cell number on their next trip with YouRoam. Please email a copy of your post to hi@youroam.com