There are priceline sites in the UK and Asia. The links are available on priceline.com. As for Norway I do not know. I've checked out their site and do not see a way to register an international address but I don't see any prohibitions either. Good question!

Try linking to the UK and the Asia site to see if you can find any more info:

priceline.co.uk
priceline.com.hk

Good luck.