Please mind what I said above though - I've trialed some <10 CHF shirts that completely warped and fell apart after a few washes, so don't expect too much for too little.

I can recommend the "B&C Mens V-Neck T-Shirt TRIBLEND" for V-neck shirts and the "Fruit of the Loom Mens Poloshirt PREMIUM" for polos.

Obviously, YMMV.