I was looking at some good quality shirts that would suit me. Shirts in France are quite expensive if you want a minimum of quality so I decided to try TM Lewin. The staff is welcoming without being too pushy, an they take some measures(neck and length of the arms) to propose you the best fit. Then you can pick the designs you like, within your size. If you take 4 shirts, it is 25£ per shirt, that is roughly 32 €. For the quality they offer, I find it is a good deal!