Quote:
Originally Posted by tubemonkey
It's not that easy. You have no idea if they've already been spent. Nor do you know how many you need to spend to avoid losing them. So you need to go back and figure out when they were earned and what you've spent so far.
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Since Amazon takes the earliest expiring coins first when you spend them, you just have to take your current total and backtrack from the most recent earned coins until you hit that total. It doesn't matter how much you've spent.