I had a few done at R&W fashion at Argyle Centre. I paid HKD 143 each, that includes a Gildan shirt (which I like, it's nice and "solid" unlike other shirts I found at H&M for example), a 30x30 cm logo at the back and a 10x10 cm logo at the front. They have two kinds of printing method, I chose the kind that prints the logo on the shirt directly. Supposedly it is more durable than the other type but it still wears out a bit (though I do wash the shirts very often). There is sorts of a mark on the shirt though, probably from the printing sheet. I think you can get your shirt after 3 working days after paying, not sure if that has changed.