I speak Italian, having learned it at school, and for many years - from about 1995-2005 - I read half a dozen or so fumetti a month. The exchange rate made them cheap enough to import at that point direct from Sergio Bonelli in Milan - Legs Weaver, Dylan Dog, Martin Mystere, Julia (a particular favourite), the off-the-wall Napoleon, the richly gothic Dampyr and many others. Apart from perhaps Dylan and a couple of early Martin Mystere produced in the US, I've often wondered why these weren't produced in English editions. Very little in the way of marginal cost and a vast English-speaking market to attack.
Thanks for the reminder about DC Thomson's picture library series. I know that they produced loads of schoolgirl-type picture libraries in the 60s particularly - and I wonder why these have never been batched together for sale in maxi-pack editions for Christmas and so on?