Something is bad when it doesn't fulfill its function. For example, if I say I have bad eyesight, we all know that means that my eyes aren't good at fulfilling their purpose (which is seeing). Goodness and badness are analogical properties, meaning that what is good for eyes isn't going to be what's good for (say) taste.
Now, the purpose of taste (at least in the context of aesthetics) is to recognize the beauty of the thing. Beauty, like goodness, is analogical, and different things have different standards of beauty. But beauty, in all its forms, concerns the perfection of the thing in itself. So a person with bad tastes will either see objectively beautiful things as ugly, see objectively ugly things as beautiful, or both.
Now, the purpose of the story is to convince you of a conditional proposition. Conditional propositions take the form of "if X, then Y." For example, Star Wars would try to convince you "If there was such a galaxy far, far away, then this would be what would happen in it." A good story tries to convince you of some truth. The extent to which it succeeds or fails at doing so determines whether it's a good story.
Hamlet is a good story because it 1) showcases the author's in-depth understanding of human psychology, making the world much more believable by populating it with varied and understandable characters and 2) sweeps the reader up in a whirlwind of emotions with its gripping revenge plot. Revenge plots appeal to us on a primal level, so this makes convincing the reader of its conditional proposition that much easier. On top of that, it's an excellent work of art. In terms of its intellectual sophistication and of its prose, Hamlet is objectively beautiful because it represents the perfection of intellect.
The price on the tag tells you, objectively, how much the market values the object. Such valuation is ultimately subjective at the bottom level.
In contrast, the actual worth of the object is determined by other, more objective factors, of which price only tangentially captures. To conflate moral worth with economic worth is the height of folly.