Tailors: Sell those shirts and make gold

Sometime ago I was looking to buy a shirt for my new alt but there were no cool colors available in the AH, so that made me create some shirts with my tailor instead, and sell them for a nice pile of gold. What I've noticed people are ready to pay even 100g for a shirt and a lot more if it's a bit more uncommon, like black shirts or those obtainable from a pattern. Do some reasearch on your realm