There was a poster on another thread a couple of years ago or so, singing the praises of World Group Tailors located at All Seasons Place.
I paid them a visit last year and they told me it would be approx 15,000 baht for canvas suit, if I brought my fabric in.
I have had a few suits made with Narin. The last one I brought some John Foster fabric in.
They were fused.
I have never had any issues with alterations from him either. One jacket needed some work and I took it...