Fine, but I was thinking of this taking the form of a group activity, and whoever was in charge of it could be in the States. Everyone sees the stamps online, buys what they want, sends in their money and a SASE, and gets their stamps.
I know fully well how
Canada Post and Revenue Canada set up the whole GST on stamps (and other things) on approval, valuing the whole shipment before the receiver even sees them, and yes, it is stupid...
...but then again, it was set up by Conservatives, wasn't it?