already pointed out by Gerry.
Chipp2 for ties - I've red they sell quality grenadine for $47.50
Blue in Green Soho for Denim
Nordstrom and search Google for "mens department stores new york" you will get a few there
Will be in NY next February and am planning to go to those places for sure!
Is Century 21 still a wortwhile spot? A long time since I was there.