Update :
my partner had same issue brian doesnt wanna pay after awhole week of selling the ccs he claim "he returned the money back to customers" (which no shop will randomly credit you money week after buying ccs.
in his response showing validity results (actually shows most of them are live) and he claims he removed it from shop (after he sold 90% of it)..
the claim that any of this cc was used anywhere else is a no-proof fantasy brains claim so he can run away with the money