Whats the timeline to use these before DOA
If anyone could answer that have them buy you a lottery ticket. I still have 6 or 7 unused ones going back up to a year. I have also had many that didn't last long enough to type the card numbers into my account. Big YMMV. No one can tell.
If I get 2X what I paid from it I'm sort of satisfied and all I really expect. Anything above that is a bonus but I have been able to fully use many of them. I have been scammed 4 or 5 times (you can see from the "neg trust" I have left) but other than that been pretty lucky. It's a gamble like the slot machines. Win some lose some.