If U mean U. Weapon
Arthur worth for 20$ and can offer for it in 240-220 rows now pair kantata+5 is Worth for 40 rows
Smok is 15$ worth that can be offer for it in 180-150 rows defends on buyer or seller , now sir u can convert it for kantata pair , using price or rows into pair .
which means
Arthur = 5 Pair Kantata
Smok = 3 Pair kantata+ Add maybe