Didn't know about that site but it looks really useful and potentially very profitable with a small investment. Some of them are just fucking amazing: £10 would return £3,598.25 that one seems incredible, probably not going to happen but it's definitely worth a try.
What I do for each weekend spend $5 on 10 of the best looking Parlay bets from that site so total cost for weekend betting is $50
Have had some 4 fold Paylays come in easy profit
My biggest win is that I have won some 0.3 BTC. And that is good I think. But I hope that I can make some more money later.
And that will be very nice. But there is a higher chance that you also can lose some money and that will be not good.