I go to Century 21 pretty frequently, and the reason is quite simple…
Their prices are unbeatable.
Shirts are potluck there, where sometimes you can find your size and style, although I’d have to assume more normal sized people don’t have an issue.
Ties though are a real bargain, with ties in the $10-$25 range. These are legitimate companies for ties, and the selection is enormous. Colors and styles are aplenty, and their is always something for your taste.
Another thing I’ve bought there is luggage. Again with a nice size selection of colors and sizes, and the prices are seemingly unbeatable. I’ve bought multiple pieces of luggage there, mostly from Samsonite.
I go to the one on 86th street, because of convenience and cheap parking right across the street, but the one in Downtown NYC has good selections as well.