I talked about this in OOC earlier, if you have (starting small) 875k and you start bet at 125k, then if you win its 125k, if you lose and double every time you will get a total of 125k profit. you have a 1/2x2x2 chance of loss as there are three steps (125k+250k+500k=875k) then you make a 125k profit 7/8 times and make a -875k loss 1/8. Adding more maths into this 7/8(chance of profit) x 125k(profit) = 109375 Then the loss 1/8(chance of loss) x -875k(loss)= -109375.
This balances out, the larger the safety net, the larger the potential loss. The lower the bid amountt the lower the profit. This will work with any numbers given, flips are 50/50, no 2 ways about it.
Ex. 100k start bid, and 12.7mil safety net (this should be safe, right?) you have 7 goes before you are out. 1/2x2x2x2x2x2x2 chance of loss (1/128) and thus 127/128 win. 127/128x100k=99218.75 and the loss is 1/127x(-12700k)=-99218.75
sry man.