Update 31 August 2015: You can now sign up for an annual membership card for free with your NATO card. If you visit frequently, stop by customer service and ask for the membership form. It will save you from having to get a day pass every time you visit.
I call this Dutch Costco! You walk in the door and on the left is the customer service counter. Give them your NATO ID and they will give you a day pass to allow you into the store and to purchase items. Just like Costco in the states, this place has a membership in order to purchase, but they do allow NATO members to shop free!
They had patio sets, tools, appliances, and more. The food was well priced and would be great for purchasing fresh fish. Also, if you are having a party, this is the place to buy the food!
Thermiekstraat 15 Nuth, Netherlands