The fist wave was the OTC Original Trilogy Collection that released a couple of years earlier that the saga set of 2006/2007. Daves right they cost a lot less than vintage and are just a kinda vintage packaging throwback. They did release a version of vader in woolies in slightly different external packaging as a promotion but the vader was also release with the otc packaging as well.
Heres the full set of 12 otc collection
I collect vintage mocs and only really picked these up while i was waiting to source particular vintage items.