Using your own photos used to work 10x better than using stock photos but that stopped being the case a few years ago. These days, stock photos with a perfect white background seem to do a lot better since those kinds of photos look better in Google results.
So ebay is emailing you asking for real photos of your stock?
If so , give it to them. Drop ship? Get the supplier to take the pics and send them to you.
If you're asking about if stock photos are better to put on than real photos?
Yes, they are
ebay asking for real pictures 
