The teacher on Dance Moms, Abby Lee Miller, is worth $2 million... But the actual moms aren't supposed to get paid by the show.
I am pretty sure they have a contractual relationship with the show though, just think about how much time they must spend in viewing rooms (most and contributing to the show.
Also most of the show isn't real anyway.
Abbie isn't the only dance teacher, they must have an ARMY. And the kids on the show aren't even the mot talented, they've just been picked for TV... Everything about the show is set up for TV and not real.