Re-using the same photo to represent a multiple of an item is really quite off-putting. If you do not have photos of each "identical" (maybe...) item, then just say so. Photo re-use is almost dishonest. One wonders what is being hidden. Maybe nothing. Maybe not.
Catalogue photos are OK if the item is described as (and actually is) "NIB, unopened".
BTW, I have bought numerous items from Trainz.