Lately I was asked to realize a few slides for an ecommerce site. The work was to go in the company, shoot many photos of sold objects, back to office, clip the images and put them in many backgrounds (I had to make a research of stock images).
The ideas of the final result was sent to me by email, the client took photos from the web of high quality professional advertise and wanted "something like that spending less possible".
I made my best to fulfill his needs and made many tests based on his requests, in the end I sent him something like 30 different images of products in different backgrounds and colors.
The client accepted only 2 images. Now he is complaining that I charge too much for "just two images", when he asked me to work for many hours.
I usually charge him a cost per hour and he knows that.
How to deal with situations like that?