Basically, I need to risk a thousand of dollars only for 1$ profit?

Damn son, Hell Nooooo.

Did you know sometimes, if you not really lucky you will get more than 20x streak lose. From my experience from a crash game, I see 23 crash stop under x2 the lucky thing i stop at 5 streaks lose.

Anyway, I don't understand this kind of people who selling his method/tips/guide for gamble. If he really goods, then just used your method by yourself and make your self rich. In gamble always have some people who lose the bet and other people win the bet.

Backup by money? ESCROW IT then !!!

*More funny things, the seller of this kind service always a newbie.