NOS - New Old Stock
Say for instance you own a parts house and you buy a sh*tload of parts, say fifty pair of Jeep headlights. You only sell half of them so you take them off of the shelf to make room for newer items. Months or years later you decide to sell them off. They are still in the original packaging, still in new condition and are just sitting there collecting dust. You sell them as NOS - new old stock. The great thing about NOS items is that you can almost always get them cheaper than new parts, and you can also find hard to find parts that are no longer made. I almost always look for NOS items if I am looking for a part that costs over a certain amount of money. Think about it this way - if you save some money buying a NOS item, that's more money you can spend on other stuff. I got my component speakers for little of nothing, in perfect condition since they were stored in a climate controlled building. They work and look brand new. So for the same amount it would have cost me to buy the speakers alone, I got the speakers and a second pair of new speakers for the rear for less than I would have spent on the component speakers alone had I went to a store or bought them off of the internet new. Freakin' sweet! You can find NOS items all over if you know how to look.
The downside of the term NOS is that it was popularized in that stupid 'Fast & Furious' movie as a term for Nitrous Oxide Systems, so now when alot of people hear the term NOS they think it's somehow referring to laughing gas. It can be of course, but when it comes to parts it means New Old Stock. I'm a stoned-to-the-bone cheapskate when it comes to certain things and buying NOS parts and items has saved me a ton of $$$.
A real chef can cook in any room of the house