My address has always been US even though I've been living in BKK for a while, recently I updated my profile to my BKK address. I didn't realize all the fare results would be in Thai Bhat now so thats a negative, and a regular flight I take to the states tripled in price?! I changed my address back, turned my VPN back on and the fare went back to what I usually pay. Just to check, I changed back to my BKK address and turned my VPN off and the fare tripled again. Is this something I'm not aware of? Fare based on your home address?