Hi Marko! ;)

Debbie, agreed (this is becoming a habit ;) ). But maybe they think just slapping a second skin onto the resource texture counts as enough change so they can sell the unaltered skin as well.
Or maybe they don't think that far at all, maybe they think adding teal colored eye shadow is enough of a change.

And let's not forget, some people might just be a little too tempted to make a quick buck in the Poser Biz with merchant resources, as these packs are pretty convienient ;)