Well, CheckNRaisePoker has some that pay out $10 to $25 to the ultimate winner, but of course that top prize is gained by beating 180+ other people

They do seem to pay out to the top 10-15 places, with the smallest payouts being as low as $0.60 to $1.00

Of course, I haven't cracked the top 25% of such a tourney yet, so the money (small as it is) is still quite a ways a way in terms of improving my game.