I remember a few years ago it was 100$ but I'm not sure now mine is set to £GBP and that is £60 if I'm not mistaken.
For me, its £50. But I have over £450 in there right now, I like to wait till I have £1000 before I cash out
when you reach the minimum amount " 100$" they will pay you the money at the end of the next month if you use western union .. you will get it fast .. regular checks you will wait more.