Price Checks on Some Golds...

I know most major things (most wanted mods, etc. etc.) but there's too much variation to ever be sure if something is valuable or not, so I'd like price checks on these items. Thanks in advance

Shadow Blade of Swordsmanship (req 8 swords)
15-22 damage
Damage +19% (while hexed)
Swordsmanship +1 (16% chance)

Water Wand (req 12 water magic)
11-22
Energy +5^50 health

Shadow Shield (req 12 str)
Armor: 16
+9 vs piercing (thought this mod was nice, otherwise req kills it)

Vampiric Shadow Bow of Warding
15-28 (req 8)
14%^50
4/-1, +7 vs elemental

Thanks

If I'm not mistaken the Shadow Bow is probably the most valuable?