HBO is incredibly stingy with their wardrobe. They won't give anything away. We are lucky there is even a GoT / True Blood set... After the Inkworks Sopranos set I didn't think they would ever license out another property.
Also to Tim who said there is a lot more of this than Season 1, I know a bunch of dealers/distributors and they all got their exact order or season 1. No more, so unless crypto is printing more and sitting on it themselves, I don't know where it would be going. From what I have heard the print run is exactly the same