sold 3 last night, all x Large.
If your demographic is older blokes like ours, we pretty much sell only X large and small for their partners.
To make it work you need a minimum order run of 50 and keep it strictly black and white.
That can get the cost down to about £4 quid a pop.
I can recommend Pins and knuckles for great quality at a good price.
A card reader is a must. They cost nothing and the commission is very small in comparison to making or not making a sale because punters dont carry cash.
Sell them for £15 each, £10 profit per Tee, it soon adds up. we did a day in the studio on the back of T shirt sales alone from the past few months.