They mean "more than the lowest amount that has six figures" (which is 100,000), but they say "more than six figures", which implies seven or more figures, e.g.

They mean "more than the lowest amount that has six figures" (which is 100,000), but they say "more than six figures", which implies seven or more figures, e.g. 1,000,000 or more. Yay for context ;)