Personally, I buy protein powder even though I know the ingredients are actually too cheap to justify the price. But I’m too lazy, and the reward of a cold chocolate shake after working out makes me forget about the outrageous cost. It’s a little guilty pleasure I’ve come to terms with.
I’m vegan but really missed ice cream so I started getting Ben and Jerry’s almond milk version when it’s on sale. It irks me that they charge for a pint what I could get a gallon of the dairy ice cream for, but there isn’t much selection for dairy-free. For whatever reason vegan versions of foods are pretty much always priced like premium brands. I’d be happy to buy generic brands of stuff in bulk, but instead I look at the price of something and often decide I don’t need it after all.