PC 3 Items. Hammer, Sword, Staff

I'm new to this, but these items seem a little shinier than the rest, and with the oversight of a guild member (to make sure I don't get ripped off) I'm asking for some help with them. They might be worthless, my GM won't tell me, they want me to learn how to do this. Teach a man to fish, and all that.

1)
Barbed Long Sword of Fortitude
Gold Item.
Slashing Dmg: 15-22 (Req: 12 Swordsmanship)
Damage +17% (while hexed)
Lengthens Bleeding Duration on foe
Health +27

2)
Vampiric Twin Hammer of Warding
Purple item
Blunt Dmg: 16-30 (Req: 7 Hammer Mastery)
Damage +11% (While health is above 50%)
Life stealing: 2
Health regeneration: -1
Armor +5 (vs. Elemental Attacks)
Two handed.

3)
Jeweled Staff of Fortitude
Gold Item
Energy +10
Chaos Dmg: 11-22 (Req 8 Illusion Magic)
Quick Recovery from Crippled
Health +26
Two Handed.

Thanks for your help, and... if it isn't being too greedy, could you give me an explanation as to the reasons for their relative worths, so that I might learn how to figure it out myself, with time? Thanks!

The 27 health I'd say alone is 20k, max damage? 25k total.