I too have ordered from Nialma. As coogie says, their customer service is great and their turn-around time is exceptional. The fit, too, is good: if you give them the proper measurements, they'll follow them exactly. But the quality of their shirts--or, at least, of the shirt they made for me--is poor. MOP buttons come standard on all their shirts, but the ones they use are paper thin:

I am no shirt-construction expert, but the stitching looks very poor to me. It's very sloppy and uneven throughout and sometimes bulges from the shirt entirely, as can be seen in this photo.

And the collar-stays they give you, while thick and sturdy, are near frankensteinien in shape. It looks as though a child fashioned this one with his safety scissors.

Finally, and this may only apply to my particular shirt, but the buttons do not appear to be stitched on very well. The top button, as you may have noticed from the first photo above, fell off. It did so in the wash and after only two or three washes. Overall, I think there are much better values to be had for those who are willing to wait.