I just joined a gym, so in the water bottle section of the discount store, I contemplated my preferred brand of bottle with superhero themes. Didn't really like most of them, but finally put the least objectionable one in my cart.
As I continued shopping, I realized that the bottle would not make me as happy as the one I already have (which has a better superhero logo), and I don't need another water bottle in the first place!
$7.99 was a good price for that bottle. However, I got to spend $0.00 and am just as happy and prepared for the gym as before.