Hi sinkoat,
They play a lot like spin-and-goes.
Do you remember "Grand Tour"?
If so, it is just the same structure — you can buy in at any level, and if you win, you register for the next level, and if you win all levels — 4 I think — then you keep all the $$$. You can also buy in directly at the top level.
These are bounty tournaments, so you win $ for every player you knock out, and some have big bounties.
Since the buy-in entry level varies, just use 100 times the buy-in level as a guide to your bankroll requirements.
Like all gimmicky formats, they appear to casual players, so there may be more weak players — but where there are weak players, there are highly skilled players lurking around to take their money.
Best of luck :gl:,
VS