The buy back price offered by BetKing will be based on the current total bankroll profit.So for example if the price of the token at the end of the crowdsale was $0.014 and the bankroll profit was $1,000,000 then the buy back price would be $0.024 (1,000,000/100,000,000 + 0.014).

Every quarter BetKing will offer to buy back up to 10% of a holders tokens at the current buy back price.

This means at least 90% of the bankroll profit stays within the site each quarter, raising the value of remaining tokens.
Will the tokens that are bought back by BetKing be re-sold again at some point, or are they off the market forever? If they aren't re-sold, the bankroll can only go up from bankroll profit.