Not mentioned in the article, but if you're willing to wait, some of those Saville Row suitmakers will produce a bespoke suit for much cheaper than $4000. The trick is to add a 4 week wait time and ship the measurements off to India. And of course, if you can make the trip to India yourself (or plenty of other countries in SE Asia), then a bespoke suit will cost you less than $100.
I have often been tempted to go get a suit from these guys ( http://www.syedbawkher.com/) who promise a bespoke suit as good as Saville Row. However, the number they quote ~ $1000 is not exactly cheap enough for me to experiment.
I bought a couple $100 suits in Vietnam when I was there. The fit was good but the quality was low. They fell apart within a year. That was the experience that everyone I talked to who bought made to measure clothing there had. You get what you pay for.
