Anyone seen the fielding standard in the IPL? That gives Maxwell an extra $200,000.
As when Christian got his dosh, there is always a bit of extra interest in a guy who can make runs straight away down the order. There are a million batsmen who can smoke them batting in the top 3, when they get some time at the crease, but not many can reel off 25 from 15 at the death on a consistent basis.
To be fair, Maxwell has not done it on a consistent basis; and he's certainly not worth what he's getting IMO, but that helps explain how these guys like him and Christian get such big prices.