I believe you must speculate on what you estimate will be the length of Chisoras ban, then stake money with the prospect of receiving a greater sum in return if you are correct. I don't think "free" is accurate though because, if I've read it correctly, you will not get and extra money OR your initial investment back if you don't pick the right outcome. It could almost be described as "gambling" IMHO.
So, in essence, this 'free money' isn't free at all!? You seem to be suggesting that there is an element of risk to all this. I don't mean to be rude or disrespectful to the OP, but certain people may see this as somewhat of a gamble.
Clearly the element of reward in relation to risk is much greater than with the vast majority of other bets. I don't wish to be rude or disrespectful, but the fact that it has taken until the second page of this thread for someone to point this out does highlight that you have completely missed the point of this thread.
Clearly so in your mind. This isn't necessarily an accurate reflection of the reality of the situation.