I think this site has the best market around... i've looked at rpg traders and on guild hall forum bu they aren't as good and populated.
For your items, if they're not max dmg they aren't really worth a lot.. your best bet is to salvage it and hope to get the nice upgrade (it doesnt work for rods and wands and truncheons they don't have any salvageble mod)
1. almost max dmg i'd say around 1k
2. 200gp
3. salvage and hope to get the +5 head 15-20k
4.5-6k
5.nice one too bad divine favour is for monks primary only so u need to find a monk-war to really use it (and m-w are usually set up for low hp farming and they don't need a shield) i'd sell it for around 5k anyway the -2 ench is a good thing
6 salvage and sell string for its price check it on the sticky post in the Etc. section
7 4-5k
8 3-4k
Hope it helps seeyou