Such luck happens once, and since then I've not seen anything similar again, I risk 5 to 10 dollars on slot and later I reduce the amount to 3 dollars per week, because the games keep going against me and I feel I can use the extra deducted amount on something else.
It is possible to win big with small amount but don't go around looking for such luck, it comes when you don't expect it, my advice is concentrate on using what you can afford to lose.
When and if you ever get this lucky it could be for the split second, if you allow greed to have its way you can also lose everything back again, don't try to be smart with slots, it can get extremely brutal.