Barker

You can find Barker, the werewolf clothier, in his shop, Barkers' Haberdashery in the most northern house of Canifis, just west of Mazchna, the Slayer master. His shop is marked with a.

Barkers' Haberdashery
Barker sells an assortment of robe sets, gloves, and boots in five different colours; grey, red, yellow, teal, and purple. He also sells five coloured capes; red, black, blue, yellow, and green.

When the shop is at full stock (see picture), prices are as follows:
 * Hat costs 650 coins.
 * Robe top costs 650 coins.
 * Robe bottoms cost 650 coins.
 * Gloves cost 650 coins.
 * Boots cost 650 coins.
 * A red Cape costs 2 coins.
 * A black Cape costs 9 coins.
 * A blue, yellow, or green Cape costs 41 coins.