Vampiric Jade Longbow of Shelter - Price Check please?

Dear Price Check Gurus,

I would appreciate it if you could give a value indication of the following item:

Vampiric Jade Longbow of Shelter (gold item)
Piercing Damage: 15-28
Requires 13 Marksmanship
Damage +15% (while in a Stance)
Life stealing: 5
Health regeneration -1
Armor +7 (vs. physical attacks)

Additionally, I would be grateful if you could also give an indication of the value of:

Sundering Bow String
Armor Penetration +20% (Chance: 15%)

Many thanks in advance for your help.

1. Hard to sell, 2k/Salvage
2. Merch food, only 20/20 & 20/19 are worth selling nowadays.