2d images drawing

I require 7 illustrations creating that depict a process flow very similar to the one I have attached. We have 7 to do in total and most of them are similar in length and there will be the opportunity to use some images created more than once. The images can be very similar to what is shown in the attached image, but we will have our own colour scheme. Can you quote for how much you would charge for doing all 7 and a timeframe it would take to complete please.