I'm SO very sorry for misunderstanding your question.
It's one of the beauties of Auctiva. With Auctiva you can place as many pictures of your items in your auctions. There is NO additional charge with ebay. (unless you're using gallery of course)
When you're designing your auctions, go through and put as many pics in as you'd like.
When you're done, choose eBay charge before uploading and you'll note the price is the same with one pic as 10.