I'll admit, I was one of the most skeptical people trying it out. I thought that there's no way an app would be able to properly measure me by simply twirling once. I went through the process because it was super quick and I liked how I could customize my shirt the way I liked it. Words cannot express my astonishment when I received the package in the mail. The shirt fit so nicely and the quality was incredible. I wore it that same night, and then again the next day. Def worth trying out, especially if you dislike shopping like I do.
Strangely enough I get the same from £1.75 T-shirts off Amazon and they fit better and last 4 years longer than the expensive Gieves and Hawkes (tailored) shirts I had a few years ago...
I think this is all YMMV territory and subject to mystique like wine tasting, watches (jewellery class watches) and crazy expensive HiFi products.
We have definitely found that more expensive doesn't mean a better fit. Because every person is shaped differently, what fits great for me will almost certainly not fit as well on someone else. And being more expensive doesn't solve that problem.
We use over 14 dimensions for each of our shirts, so that every person who orders from us has a great fit.
If you can find off-the-rack shirts you love at a lower cost, I think that's an awesome option. However, I can say personally I've never found anything off-the-rack I like as much as my custom stuff (both pre-MTailor and now while doing MTailor), because it fits better, especially in my shoulders, waist and the length of the shirt.
T-shirts are generally stretchy, so they don't need to be custom-made to your body size.
From personal experience: I can buy ready-to-wear shirts, but the armholes are slightly larger than necessary, and there's always excess fabric around the waste, which means it bunches up when tucked in. Some places have choices of regular/slim/extra-slim, but even extra-slim is a bit baggy for me.
When I wear a well-fitting shirt (either custom-made, or one where I've used my sewing machine to take in the sides), the shirt doesn't look better. _I_ look better.
