Papi, 50% won't work - half of the profits yet none of the risk. Unless you post some SOLID proof of performance, this won't fly.
What is the risk? have you even read what it says? Have you contacted the Manager? I think not. There is no risk. You pay 50% of the profit you earn. You don't have to pay anything! The software is currently in the last stage of testing and will be provided at the end of the video software, how it works!