They could cut down distribution costs even more if they used two factories to manufacture the CDs - one in the US and one in eastern Europe. As sales of R:TW in Europe are likely to be several hundred thousand at least, they could eliminate the need to use Air Mail.

Still, there was some poetic justice for Europeans when UFO:Aftermath was released. The US distributers messed up so it was available in Europe a month before it was available in the US.