Hello, first of all this is not an automatic response and I assure you that I have read the whole project description.
There are more techniques to remove the background. Some are based on automatic tools (and the results might be better or worse depending on pictures) and some are manually (using a pen tool to follow the contour of the object). Generally the manual techniques are better, but are more time consuming and therefore, more expensive. However these not are not suitable for hairy subjects (human/animal hair or stuffed animals & plush toys)
So to give you an exact quote and time around I'll have to see all the pictures, or even more of them. I also can make a free sample
Thanks,
Sam