I'm looking for a term that describes goods that have no value for the majority of people, or a fixed value for a small minority.
For example, a random book (not the latest best seller, nor a rare book). For most people it has a value of 0 since they simply don't want to read it and if they were to buy it they'll probably never be able to sell it back. But of course for someone who wants to read it, they might be willing to pay a fair price for it.
It's unlike an iPhone for example, which I might not need but it still has a fixed value since it can be easily re-sold. But that random book has either no value at all for most people, or a fixed value for a few people.
Is there a word to describe this kind of good?