Just about any digital camera can produce good photos for ebay.
Before making any suggestions, it would be helpful to know something about the size of the object to be photographed.
Is it as small as as stamp?
Or as large as a car?
What is your budget for the camera.
Cameras start at about $100 and go into the thousands.
I do e-bay sales , and I need a good close up Digital camera what is the best.