In The Barrens, theres a NPC selling [Mighty Chain Pants] Best level 19 warrior twink pants, and they look cool (no like the short ones). This sells easy for 10g and I just make a level 1 alt. send it some gold and park it there, and log in once in a while. the legs cost under 1g and sells for 10 minimum
The NPC (included location):Vrang Wildgore - NPCs - World of Warcraft
The legs: Mighty Chain Pants - Items - World of Warcraft