HI SalesMeister and welcome to eBid.
I am sorry I can't help you with your query as I tend to sell mostly used books.
Hopefully someone else here may be able to offer advice.
I must admit I tend not to buy from people using stock photos as I like to see exactly what I am buying or bidding on.
However that is just a personal opinion and I quite understand how difficult it is if you have many titles.
Just a word of caution. On eBid it is not allowed to list duplicate or more items. It is allowed to list one and state how many of the items are available for sale This stops the boring pages and pages of identical items which puts off buyers when searching
Anyways..... Once again welcome and do come back and ask if you need more help.