OK, having extensively researched exchange rates and denominations (well, all right, I typed a couple of sentences into google), I've found out there's a shade under two US dollars to the pound, so I can set a price of $12 inc p&p per CD for any US customers. Please send the money in note (bill) form to the postal address Here...go on, its reasonably good value ...and don't forget to include YOUR address...if you're happy to trust the postal system, so am I.

Exchange rate for Canada is apparently almost identical, but pricing is complicated by the removal of the one and two dollar notes from circulation back in the late '80s (thank you, wikipedia); so I'd have to charge either $10 or $15, neither of which is ideal...so I'll have a think about that and maybe come up with a better solution.