There's an easy work around for this.... A shipping broker
I've used
www.myus.com on many occasions to ship overseas. I had a buyer in Australia who encouraged me to look into it.
Step 1. Buyer creates 'myus' account and gets assigned a shipping address in the U.S. Sarasota, FL I believe.
Step 2. Seller sends package to 'myus' location in Sarasota, FL
Step 3. 'Myus' sends package to buyer
A big benefit of this is once the package safely reaches 'myus' in Sarasota your off the hook in regards to eBay feedback and returns.
'myUs' shipping to Thailand for a frameset is $125 plus shipping from the sellers location to Sarasota.
so...
Myus membership: $0 for one package one time
Shipping to Sarasota: $35
Shipping from Sarasota to Thailand: $125 via FedEx
Total: $160-ish