Material things have an actual value and dollar value.
The dollar value is the one you see on the price tag.
It’s the $20 book or the $1000 course or the $50,000 private jet hire fee.
The actual value is what you get from paying the dollar value. A $20 book may give you an idea which you keep for life.
Where as, a $20 cocktail may give you pleasure for an hour.
Signing up for a $1000 course is more expensive than the free version (duh). But you’ll probably take it more seriously. And build skills which can earn you far more than $1000.
Health and education are almost always worth the dollar value.
If you’re confused about the dollar value of something, think about its actual value.