Having worked in the manufacturing industry I can tell you this with utmost confidence:

Wal-Mart clothes are precisely as expensive as they should be.

All other clothes are also precisely as expensive as they should be.

There's a very good reason why Wal-Mart clothes are 1/3 the price of other chains, and that word starts with a capital Q. Most people who've never worked in manufacturing call bullshit on this, but they really, really don't know the reality of things. You do get what you pay for.