I thought about doing this, never could be bothered tho..
anyways..price do vary but this is a rough guideline on vanity items
all prices based on the weapon item being
max dmg/gold or
max armor/gold and with perfect inherant mod (15^50 - 10/10)
Chaos axe
req8 600k
req9 500k
req10 300k
req11 200-250k
req12 150k
req13 100k
Fellblade
req8 600k
req9 450k
req10 300k
req11 200k
req12 150k
req13 80-100k
{yes chaos axe and fellblades maintain roughly the same price as each other}
Brute sword
req8 800k+
req9 600k
req10 350k
req11 250k
req12 200k
req13 100-150k
Staffs (staff req isnt important, only nubs/collectors worry about req)
ghostly 10/10 500k+
shadow 10/10 300k+
Raven 10/10 150k+
Accursed 10/10 100k+
Orr 10/10 500k+
10/20 or 20/10 would be around the same baseline pricing, except on mesmer items where 20% fasting casting is kinda pointless
Eternal shields
req8/9 +30/-2 (stance) 5-7mill
req10 +30/-2 (stance) 3-5mill
req11 +30/-2 (stance) 2-3mill
req12 +30/-2 (stance) 1-1.5mill
req13 +30/-2 (stance) 500k+
req8/9 +30/-2 (enchanted) 2-4mill
req10 +30/-2 (enchanted) 1.5-2.5mill
req11 +30/-2 (enchanted) 1-1.5mill
req12 +30/-2 (enchanted) 750k-1mill
req13 +30/-2 (enchanted) 250k
Shadow shields
will be around same baseline pricing as eternals.
crystalline swords (15^50)
req8/9 20-25mill
req10 15mill
req11 10mill
req12 5-10mill
req13 1-5mill
req8/9 2-4mill (14^50)
req10 2mill
req11 1mill
req12 750k
req13 500k
Serpant axe (15^50)
req8/9 5-7mill
req10 3-4mill
req11 2-2.5mill
req12 2mill
req13 1-1.5mill
Dwarvern axe (15^50)
req8/9 5-7mill
req10 4-5mill
req11 2-3mill
req12 2-2.5mill
req13 1-2mill
ball park figures...but good ones
cant be arsed with non-perfects