Assuming RTW = ready to wear, I’m not opposed. But I did spend some time at Nordstrom near me in Charlotte where they had Hugo Boss and Ted Baker for $895, and I feel like I could do way better at that price point. I’m going to take a look at SuitSupply and keep an eye on Spier and Mackay as they’re out of 38R for the color I want. Thank you.Is there a particular reason you're going MTM rather than RTW? What city are you based in?
Personally, I'd be very warry of no-name in-house fabrics, they are almost certainly below the quality of name brands (Harrisons group, VBC/Drapers, Loro Piana, HFW, etc.). One of my major complaints about Enzo was the numerous and significant price jumps just to get into decent cloth.
Strongly agree with all of @gimpwiz 's points above, stay below S120, shoot for a name brand mill (VBC perennial classics are good), get something between 250-350g weight wise. That should be doable for $1-1.5K from a good MTM place.
If you're not a tough fit and dont plan on using the suit that often, I'd also check out Suit Supply and Spier and Mackay's MTO programs, both should come in well under $1K, leaving you a chunk of change for alterations. I'd order 2 sizes of their OTR stuff, figure out which one works for you best and then pick out your cloth and styling details