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.
Are they really that inexpensive? There is a place near me that does the duplicating thing, but I never bothered to ask prices because I always figured it would be a fortune. I'd ideally like to go in with a Theory shirt and ask them to do a french cuff in the same measurments