PC on 4 rare bows

1) Sundering Composite Bow of Enchanting (req 9)
16% when hexed
Sundering 10/10
Enchant 20%

2) Vampiric Longbow of Enchanting (req 11)
13% vs hexed foes
Lifesteal 4/1
Enchant 18%

3) Half Moon of Marksmanship (req 8)
14% >50
Marksmanship +1 (15% chance)

4) Poisoners Short Bow of Marksmanship (req 13)
13% (in stance)
Lengthens Poison duration
Marksmanship +1 (14& chance)

I figured 1) might be quite valuable, but I'm not sure just how valuable. The others, I have no idea. Would appreciate any input.

salvage 1 for mods.

salvage 2 because its crap

keep 3, might fetch a nice price

salvage 4 because its req. 13