I was just trying the first idea that came into my mind. Results were mostly impressive, I also learned a lot in a very short time and found out new ways to approach to some issues.
I haven't tried all of the features yet I'm very positive they will work just as good.
I think it is a bit too much off with the prices and costs sometimes calculates too low, sometimes a bit much. I wonder if it might be a fluctuation due to inflation or stale data.