Was a bit late to find this deal, but there are still a couple of days to check it out. At the pop-up store you will have your measurements taken, pick out the fabric, collar style, buttons etc. and in about 2 weeks should receive your shirt.
A shirt with the basic fabric is usually $69, with the premium fabric shirt is usually $99. Only the first one is $39, you can order more at full price. They also had a deal that if you order 3 shirts at full price you get a 4th free.
The main advantage is that you can get measured for them now and if you like the shirt you could you order more from their online store as they will keep your measurements (they don't have plans for a permanent store here yet).
Level 3, Australia on Collins
260 Collins St Melbourne VIC 3000
Yo, that's $40 for a t-shirt.