Would love to be able to specific the base undercut %, right now it undercuts by a bare minimum when posting - I'd love to be able to bump it up to say 5% to make my auctions sell quicker by standing out more on the pricing list for people

Doesn't make much sense to me. People will either buy something because it's the cheapest (no matter by how much) or because it's a good deal (which a fixed percentage less than some other auction does not guarantee either).

Pretty sure the sorting in aux is done with unrounded numbers even if it is displayed rounded.