There's a website called Zenni Optical. They take your prescription and can make your glasses for ridiculously cheap. I got a pair of prescription sunglasses from them a few days ago (first time ordering) and i was pretty skeptical but they are really good. The frame quality is not as good as a pair of $200 ray bans but for under $70 (Frame, Lens, and shipping) i didn't expect them to be nearly as good as they are. My main thing was being able to go to the beach/waterpark/drive and still be able to see without the sun in my eyes and these do just that.
I refrained from posting about this for a few days so i can really test these things out and i'm feeling pretty good about it.
Disclaimer: I am not affiliated with this website and nobody i know works for this website. Just thought that people might want to know about this since i just heard about it a couple weeks ago.
If this is breaking a rule of some sort please let me know.