Just 3 days ago i`ve got sign up bonus(with promo code) for $50. The only way i could use it - to bet $20 and $30. Yesterday i won $40 for one of the bets and i withdraw it without any problems. So it is possible to get some profit from such bonuses, but it is difficult enough. I see such bonus with so easy rules to withdraw the first time and don`t sure that can get such bonus again.
I got curious about it, can you please give us the link of the gambling site maybe I could try it out? it looks like they have very low wagering requirement that after one bet you can already withdraw it. Honestly it's very rare to see such promotion.
You are right. I have never seen a website with this kind of bonus that allows you to complete the wagering requirements with a single bet. Well, if any, let me know also:)