Originally Posted by JSWolf
These online bookstores should not do any limiting based on your IP address as that is not always an indication of where the person is from.
I think that's exactly what's intended. The restrictions are supposed to work based on where the purchaser is located at the moment of the transaction, not on the country of birth or residence.
Anyway, IP-based restrictions are useless, since IP addresses can be faked and proxies or remote machines can be used.