Yes, Oli, depending on the area they are located, they will carry products used
in that area, but may not carry them in other areas. I think it has to do with the ethnic population and popularity of the product. TJ's is also notorious for carrying a product, then suddenly dropping it.
I read their business plan a long time ago, and if I am still recalling correctly, they get deals on the products they stock If that deal goes away, they may drop it temporarily until they can get the deal again. I notice that some items, like certain cheeses, wines, are in the store on a regular basis because they are very popular. I do not shop there often, just a few times a year, so this is just my observation, and what I hear other friends say.