In this example if the bonus given is $200, then the WR seem $4,000.
Grand Martingale opens doors to more losses according to players' luck, where he doubles the bet and adds another unit once of a loss of revenue. That said, we know that good losers are realistic males. https://hocvienboardgame.net/tin-tuc/choi-lo-de-tai-rikvip-trai-nghiem-thu-vi/