thanks for your input R@nsid, the thing is though I do know very well that I won't have any time to do this project, and I am going to tell them. But I do not want to loose those guys a s a potential client. So I want to give them a realistic estimate of what I would charge if I had time.

I've looked at freelancers websites and they don't actually give set rates or quotes at least not the ones I found. I am just starting out so I cannot afford to be awfully expensive. On the other hand I don't want to price myself down too much because that would just mean I'd get exploited.
I have to find something in the middle but for that It'll e very helpful to know in what price area professionals would put a project like this.

cheers