PC on a bow and a shield

Hello, just recently started farming high level areas and am a bit lost when it comes to pricing.

Gold Shocking Storm Bow of Shelter
Lightning damage 15 - 28 (Req 11 Marksmanship)
Damage +14% (while in a stance)
Armour +7 vs physical attacks
Value: 236 gold

Gold Tall Shield
Armour 16 (Req 11 Tactics)
Received damage -2 (while in a stance)
Received damage -2 (while enchanted)
Value: 348 gold

20-30plat

Thanks.