$500 is a very big bet in my opinion, it is rare for a gambler to be able to do it if they don't have a lot of money. I'm not too surprised by the victory he got because the bet he placed was too big. I don't often play slots, but if you really want to play slots, then the smallest bet I place is $0.2 for one spin. Maybe it's natural because we don't have as much Money as they do, but winning a large amount would be good enough for them to reinvest in crypto currency.
Yes, it is a huge amount, it will be equivalent to 3-4 months salary of an ordinary employee of our country. So I said, it's too much for me to deposit $20 dollars. I don't play casino games much, although when I do play I try with $0.30 - $0.20.
He who has won a big bet may have tried many times. Maybe he also lost a lot of money, then won big.