How could we still make 30 -40 $ with a 1% house edge? Wagering 1000$ with a 1% house edge, will in theory lead that you get back 990 $ and thus looses 10$. Offcourse, it all depends on your luck also. You might get lucky and end with a profit or end with a bigger than expected loss.
It all goes down on your greed if you are winning you might want to stop, bad luck comes when you want to win more when you had a good profit already, always remember there is a house edge and it will show up or play up when you play continuously, learn to enjoy your winning and continue some other time.
It depends on the player how they commit to it because even though there's a house edge once you get a good target of luck still at the end of the day there's a profit intake, this is the reason why at the end of the day still its on the responsibility of the gambler they manage the game to want to be greedy or still manage to takes the profit and step back for a meanwhile to prevent a large number of losses.
don't forget there is also the level up promo $10,000 complete the challenge on the 10 slot games that have been provided
I have dumped mine in the Plinko hole for now.... because I am experimenting with some new strategies. 
