Costco
1 Westchester Avenue, Port Chester, NY, 914.935.3103
www.CostCo.com
You have to buy a membership to shop at this international chain, but that hasn't kept this megastore, a.k.a. warehouse, from being a Greenwich hit. From pesto in their grocery section to a DVD player to a refrigerator, this huge store tries to give good value. If you want an expensive electronic item or a large quantity of a staple, this could be your best bet. If you want to run in quickly to get something, forget it.

Hours: weekdays, 10 am - 8:30 pm, Saturday, 9:30 am - 6 pm, Sunday, 10 am - 6 pm.