That markup is where we make our money. We mark each up differently, because we have unique considerations for each case. We don't collect money up-front, because that could tie up our sponsors' money for months, and require an ability to return it for failed projects. So we also have to account for the historical rate of default among sponsors who don't pay in the end, which will vary with the type of project. We protect the developers from this risk by paying ourselves out of the collected moneys last, so if we mis-estimate, we lose money.
Software development is a difficult and error prone process.
As a broker between sponsors and the developer, part of the service we're paid for is taking some of that risk upon ourselves. Hopefully by providing a better service. On July 27 and 28, we launched our respective live betas. I don't think sourceXchange has any of these things. SourceXchange has a lot of resources, so we have to keep up our frantic pace of innovation to stay ahead.