Yes - for the one-off item, it is something I have done before.
However, for the sheer number of US Skyfall variations, the initial idea was to find one person who could find them all at a reasonable price (perhaps too early for that, admittedly) and ship 'em all - in one tube. This, to save on the $14-20 postage per poster, which at 10 US posters and counting, represents a chunk of postage.
To then times that by 2 (seller to US friend and US friend to me) seems to be dedication above and beyond the sanity I was born with.