PC on Zealous Gilded Daggers of Dagger Mastery

Gilded daggers
max damage
req 9 dagger mastery
dmg+15% (while hp is above 50%)
dagger mastery +1 (chance 19% while using skills)
energy gain on hit 1
energy regneration -1


So anyone could say how much this is worth of?

AND if I would replace the dagger mastery +1 / 19 component with handle of fortitude +30, how much this dagger would be worth after it?

bumb.. anyone? ._.