Very little, generally. Hurts too much.
I agree. Sadly, I think that most American collectors (which translates roughly as ‘most collectors’) have no knowledge of, or interest in any comic book produced for or in a foreign country. Even if, as we know (having the knowledge of all knowing something or other), that makes them a considerably more rare variant of the books they know and happily collect all the live-long day. So, it would make little difference to them what the printing order was. I say this as an American living in the UK who has been collecting for almost fifty years. It took me a good few years to appreciate the significance of these books & I’m old enough to remember a few of them (US pricing, obviously) from the spinner racks In King Super & Peoples Drug Store.
Looking at today’s market, the vast majority of collectors see the term ‘variant’ as a signifier of something specifically produced in small quantities and designed to be highly collectable, preferably with a signature defacing it and with a certificate of authenticity and absolutely no historical context attached to it whatsoever.
We represent a niche within a niche & rabbit holes are places most people send ferrets down. Or something slightly less cynical.