Your Kickstarter page - I skimmed it pretty quickly, I admit, but I didn't see any mention of where the deck is being printed and by whom. Just that it has "Masterclass" 310 gsm stock from Germany.
"Masterclass" doesn't really have any meaning when you don't know where the stock's from or who's doing the print work on it. 310 gsm stock isn't all that heavy, either - to my knowledge, it's almost the same weight as Bicycle standard, and a wee bit lighter than Bee Casino grade.