It wasn't a random drop, it was a buy-drop (200x base bet )
They tend to pay better than the 500x Best- of super-bonus buy. (bad ones pay around 80x - 110x there)
Or at least less really bad outcomes. Lowest I get is 40 - 60x (still bad buying 200x, but the difference is huge on the long term)
Other than this huge massive hit, I got 2 2000-2500x wins, about 6 or 7 1000-1500x wins and a lot of 400x - 1000x wins. But it takes a longggg time and of course, in the end you'll always end up with zero.