Item tooltip should show the base value, not real value
When you look at your damaged equipment in the inventory, the prices reflects their actual price according to condition. i.e. Daedric War Axe 30 000, but when damaged, it says 15 635 etc.
(RM-1469 from redmine: created on 2014-06-12 by Lord Berandas, , closed on 2014-06-14 by scrawl .)