system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:Do expensive sunglasses like Oakleys actually provide better protection from the sun compared to dollar store glasses?

...or are you just paying for the name/marketing?
gpt
The answers here are all over the place.

Yes, you are paying for name/marketing, but you are also paying for correctly oriented polarized lenses.  There is also UV protection, but you can find that on cheap pairs too.  

What makes Oakleys preferable is that the polarized lenses (which reduce glare) are oriented in the same direction.  If they are not oriented the same direction, your brain will have difficulty correcting the slight distortions, which will eventually make it uncomfortable to wear them.