tx.bYou should keep an eye out on a website (or app) called touch of modern. These appear there from time to time and actually are cheaper. They don't hit their limits on things that often and I know the last time they had the beta qr's for sale they didn't run out of the copper. This site runs specials for a few days and new sales are added daily. Like massdrop it can take a long time to get the item as typically once the sale concludes they send the order to the manufacturer. So keep an eye out there.