No cards for sale equals gamedeath.
So, around here the game quickly got 10 players. We even held a tournament with booster prizes. Then new cards never arrived.
Down to two players now and those belive, like the others, that even if Destiny is a great game - there is not much chance for it to recover its momentum. So, Ashes will be tried instead and collections will be sold or gather dust. There are too many great games out there to make a big fuzz about this one failing.
Good luck and have fun. It WAS very fun.