I have always found KooGa gear to be very good quality - You can nominate your size. Around $7 per shirt is great value.
"For today only, KooGa is bringing their MASSIVE WAREHOUSE SALE ONLINE! Get in on the action with our Mystery Bag offer. For $50 you will receive 8 Shirts, 4 Socks (2 pairs) and a Cap.
This offer will end at 10am tomorrow and will not be seen again."
*Conditions apply, not valid in conjunction with any other offer.
I think it's sold out already, based on this message from all sizes I tried to add to my cart:
"Sorry, the following item is currently out of stock: Warehouse Clearance Mystery Bag - 3XL"