Walmart

Well, you knew it was coming. The Wal-Mart has a shop near the Social Security administration, where I had to go anyway.I couldn't miss such opportunity.
The Wal-mart's shops are probably the largest shops, but they do not seem to be particularly large to me. You could compare it to the Tesco outside of the city center (the biggest ones). The prices are good (sometimes very good), they have a good selection of cheap clothes, which I usually hate in these shops, but they have excellent prices as well as good quality, colors and materials. Except for that, nothing special. Sometimes, they were even poorly stocked on things. And it was next to impossible what you actually came for.

Marshalls

When I was packing for the US, I was quite efficient - I throw the oldest cloths away, left at home those of "middle age" and took only the new ones. So I needed to buy some more here. Fortunately, my landlady was so kind that she took me to an outlet, where for about $150 (3000CZK) I was able to buy couple of shorts, some T-shirts, swimming suit, socks and pair of sneakers. Given that (almost) each of these things ALONE would cost me somewhere between $50-$100 and that they are "branded" (nike, Adidas, Reebook, Ralph Lauren etc.) it was a good bargain.