Looks like something I’d knock together with iMacros, then edit that uncontrolled script for grease monkey.

Heck, creative use of iMacros could get you all the way there if I’m thinking right.

You have a whole bunch of a few items, and you want to auction them all, right?

So make an iMacro for one item of which you have many duplicates, loop it.

Only thing you’d really need to edit would be something to output the URL when it’s done one loop and is at the bidding page.