At $75 a piece, I might start looking towards MTM stuff... if time isn't a factor and you have a shirt that fits perfectly, most places will duplicate said shirt if you send it to them. Places like Modern Tailor, My Tailor, Ratio, etc come to mind.
You may end up paying slightly more, but the fit would be perfect and I imagine the fabric would be in the same ballpark at that price.
I agree. Proper Cloth and Luxire would be good custom options too. Luxire has good reviews on the forum and excellent prices.