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I don't think I described it well--so please forgive me if I am ultimately asking the same question twice due to my own misunderstanding.  My specific question was about the NAICS code to use, not whether or not it is a business (it is a business because my intent was to turn around and sell them, it just happens that what I was turning was collectibles), then I am wondering how to report the sales. 

 

So, Pokemon cards specifically are a game that also happen to be collectible.  So, would buying and selling these (with flipping them being the intent when buying them) fall under "games" or "collectibles" on the NAICS code?

 

Then, based on the answer to the above, would this income be included along with my sports cards sales, or should sports cards and Pokemon card sales be two separate businesses? 

 

Another way of asking, let's say I was buying and selling limited edition versions of Monopoly.  For the sake of this example, let's say most people buying these would be to keep for their own vast collections of different versions of Monopoly, though some would open them to play just as a game.  Would the NAICS code fall under "games" (because it is technically a game) or "collectibles" (based on their intent)?