I just got back from Hoi An and bought a lot of clothes. We were going to be there 5 nights, and I had clothes made from three different tailors, two "high end" and one of the budget ones. I got what I paid for... Reviews:
Yaly Couture: Expensive for Hoi An, but cheap for anywhere else. Suits are $50-$200 based on fabric. They can make just about anything for men or women. The place is large and the "women" (huge posse of like-dressed assistants) are very professional. It took several fittings to get stuff right but they spoke excellent English and got the job done. Great attention to detail. Excellent fabrics except for shirt cottons, which were a little scratchy. Shirts were $12. We spent a fortune and had it shipped -- reasonable shipping costs.
Thu Thuy: Even more expensive than Yaly (for most items). Looks small from the street but the place is large once you get inside. Good tailoring and professional staff (but far more disorganized than Yaly). "Standard" styles are not as fashionable as Yaly, in my opinion. And I don't think the tailors were as talented as Yaly. The key here was the cotton fabrics -- much softer and silkier than Yaly, but about double the price, too. Worth it though.
Mr. Xe: One of the standard, cheaper places. The guy was a thief and couldn't make a suit to save his life. $55 for a suit I threw away when I got home. I had to pay for it because he stole my wife's money! I had left a $20 deposit but wanted to just forfeit the deposit and leave the suit. But my wife had had a few things made there. When she went to pick them up, he took her money but wouldn't give her the clothes! He said that I couldn't cancel and he wasn't giving her her clothes until I paid for mine. And he wouldn't give her the money back she gave him for her clothes! This was EXTREMELY dishonest and a fight broke out. Finally we gave him the money for my suit, which I promptly threw out when I got home. I went to about 10 fittings for the suit, but he never made the changes I wanted. Also the guy treats his employees very badly and the shop is extremely dirty. I strongly recommend you avoid this charming but dishonest and incompetent tailor.