Custom Tailor Suits - Blue Eye Custom Tailor or Nathan Tailors

Currently in the USA. Need some suits and instead of spending $300 each suit for okay quality - decided I can get more worthy suits (high end) in Vietnam than in the US.

Currently looking at wool or merino wool. (Super 100-120)

Do anyone have experience with getting wool or merino suits from this experience?

Do the wools suits or merino wool suits be 100%?

I know you can choose less expensive fabric but wanted opinions.