A trigger for the lazy and the bad at math. This just reacts to the line of an identify / auction report and tells you straight away how much you could midas the item for.

#TRIGGER {This (%w) has a gold value of (%n).} {#SA You can midas this item for [%2/3] gold.}

It slips into the identify spam quite nicely, as you see:

Object 'the Ruling Sceptre' is infused with your magic...
It is a level 50 armor, weight 20.
Locations it can be worn: hold
Special properties: magic
Alignments allowed: good neutral
This armor has a gold value of 1500000.
You can midas this item for 500000 gold.

Armor class is 15 of 15.
Affects hit roll by 4.
Affects hp by 50.
Affects mana by 50.
Affects damage roll by 4.