Shopping

http://www.bizrate.com – compare prices in Web-stores.

Pharmacies
Every week they sell something with a discount.
http://www.cvs.com
http://www.walgreens.com

Bags
http://www.ebags.com - bags, backpacks, including those for laptops.

Electronics
http://www.jr.com – J&R store in New York
http://www.bestbuy.com - competitive prices

Women's clothes (inexpensive)
Forever 21
Aeropostale
Urban Behavior
New York Company or New York and Company
Filine’s Basement – SALEs store
Wet Seal
Old Navy
Strawberry – in New York

Footwear
http://www.payless.com - cheap footwear, quality "depends"