Price Check

Gold Chaos Axe
Max Dmg
Req 9
15^50
20/20 armor pen
+30hp

Gold Oni Blade
Max Dmg
Req 9
15^50
20% longer enchantments
20/20 armor pen

Gold Summit Hammer
Max Dmg
Req 9
Damage +15%
Health Regen -1
+30hp
10/10 Armor pen

90-100k +3-5 ectos on the chaos axe IMHO

Not sure on the other two