I actually did contact Ace regarding this, and they confirmed that they will under no circumstances transfer the license. So you'd have to really trust the person you're buying it from as you'd have to rely on them to get updates, etc.

The country restriction is only a possibility, and may not be strictly enforced. It likely depends on where you actually bought it. If you were a customer in USA or Europe where the price is higher, they probably don't care if you move around. But if you bought in one of the countries where it's cheaper like Russia, they'll more likely monitor the IP of where you're using it to be sure you're not trying to mark up and re-sell.