So you get your fabrics and tailor for less then two bucks?

Otherwise no, custom-made shirts are not universally cheaper than off the shelf

Go to your local Chinatown. You can get custom tailored clothing for a lot less than typical upper middle class branded office/semi-formal wear.

Tailoring is an old old art. Look beyond the flashy Saville Row brands or pseudo "quiet luxury" ones like Brunello that seem to be favored in the Valley.