I use it.

Basically, I've created several lists.
Things like:
a) Epic Gems
b) Meta Gems
c) Shadow/Jade Gems
d) One Ink Glyphs
e) Two Ink Glyphs
Etc..

Then I go into my list and check every option to be an exception from the default rules.
I check an undercut value, which I set to be 1 copper.
Each category has their own maximum and minimum values.
I set all my auctions to 12 hours, as I cancel and relist often, and want to lose the lowest deposit amount each time.