If you use the 'Turbo Lister' to do your listings (download from ebay) select Gallery Pic and it will be free rather than 59c. gives you a picture when users are browsing your listings.
According to eBay gets higher prices and more buyers.
Why not combine with the free 99c listings and just bulk upload a lot of speculative stuff. You can always raise the postage a little to ensure you cover costs!
I think you can just create dummy listings in TL, upload them and edit them online which will get you the free gallery
why do you have to edit it online? just edit with Turbo Lister, it's much easier.