Hi BubbasDoggHouse,
Thanks for posting your question here. In order to include up to 12 eBay gallery images in the listings you create through Auctiva, you just need to check the box next to "Enable Optional eBay Gallery Images" under the standard Auctiva Image Selection section and add all the images you would like to use as gallery images there.
Even though our lister page currently indicates that will be an additional charge for utilizing additional gallery images, you should not be charged extra by eBay if you include additional gallery images in your listings using this section.
We are currently working on updating our lister page and fee estimator to represent that up to 12 gallery images can now be submitted to eBay at no additional cost and we expect to have those changes in place soon, potentially by some time next week.
Unfortunately, we do not currently offer the ability to enter externally hosted images in the “Optional eBay Gallery Images” but I will make note of your comments in that regard as a suggestion so it can be considered as we are planning future site updates.
I hope this helps. If you need any further assistance with your account, please feel free to contact our customer support team by mousing over the “Help” tab within your account and selecting the “File Support Case” option.
-Mike