Since GC doesn't allow international shipping, I tried to make international shipping free and to handle it manually.
After some struggle with free shipping options, I manage to have free shipping for international orders, but Google Checkout still display [Shop] does not ship to this address, although it's free shipping.

I cannot set my products as virtual, since in this case my carrier calculated shipping rates for USA won't work anymore.

Any suggestions? Is there any way to setup GC to ignore shipping, other than setting the products as virtual?