You can earn more than 1 point per raked hand (up to 4?), which would then be 7500 raked hands. You don't need to contribute to the pot to earn a point, but that still means that even a high-stakes short-handed game with 75 hands an hour would still need 100+ hours of play to clear the whole bonus. At medium-low stakes full ring games, it would be more like say 600 hours total play to clear the bonus. If you play tournaments, then you'd have to contribute $30 in tournament fees for every $10 you get back in bonus, so it's not a great return compared to some bonus offers which offer effectively 100% return of your tournament fees.
As far as I'm aware, though, it clears $10 at a time, which is good. At high enough stakes, it would then be equivalent to $5/hour in bonuses, or $1-2/hour at medium-low stakes. That's the more sensible way of looking at things - in terms of how much you can clear in a given period of time... you can multi-table to try to clear it faster, but with the usual caveats about reduced performance if you're multi-tabling.