Yip - they pay just fine - cash out is expensive though ... $50 or so per withdrawal.
I don't have nearly as much money here as I do in betfair ...
Couple of negatives ....
They have the occasional "glitch" which seems to take down the system once or twice a month for an hour or two ....
They don't cover all meetings each day ....
Liquidity is not always there - especially at the late evening races or at the smaller meetings.
It's win only - no place or show betting ... no exacta's or anything like that ...
Once you have "fixed" your price .. you're in - if the odds drift .. you are screwed.
Betting generally only available 10 mins or so before the race starts ... (whereas with betfair you can bet the day before.)
Despite all of that - fixed odds betting is really the only way for
ME to make a decent profit at this ...
I pick and chose my races very carefully and even then - I only play when the price is right.
Good luck if you decide to try them.