The seasoned roulette player came to the casino with a $1,000 bankroll each day, betting $150 on black and $100 on the top column, totaling $250 per bet. His target profit was $350, which is the amount he would win if he hit one of the four special black numbers in the top column. He aimed to reach this profit before losing his entire bankroll, which had a 70% chance of winning each spin. By sticking to this strategy, he consistently left with a $350 profit, much to the casino manager's dismay.