I understood your post. To a retail customer I do not release the files unless they pay a higher rate.You have a wholesale customer that is reselling your files. My position is that he should have retained a copy for his own files, as I do. In an instance, where I had a PC crash and lost my files, my digitizer was able to provide me a copy of my work contracted with them. If you have them and provided them before, then I do not see a reason why you would not unless it is an inconvenience. I feel if you provided the end product, then you are not under any obligation to provide the files.