Fabrics for DIY or custom clothes

I'm looking for some quality chambray or denim (selvedge if possible) fabrics to have a tailor that I frequent make a custom shirt for me. I've searched online and various subreddits and turned up a few things like Pacific blue but they seem to cater to bulk orders.

Does anyone know of a good online store that carries stuff like that but can do smaller orders? Or point me in the right direction? Thanks!