1) Max Market Value? Why would they have one of those?
2) I've only seen it go up by ~$1M/18yo/season, so I really don't see how one player could be worth so much at level 15.

$1M last season, and now most excellent players are at $2M, and the Level 3 teams have excellent-grade players worth $3M. It's all my naked eye could see in the vast and deep outer space that is T11's higher-levels.

It may just be because we're on different servers, but I doubt that's the sole issue.