Not the cheapest 'bargain' out there but abit of an awareness post along with a $34.90USD coupon that has been working for a year from reddit.
Coupon is /r/colorblind
Apparently these glasses help with colorblindness, have decent feedbacks, a 60 day money back guarantee, and were $900 when they first came out.
Seeing it at $350USD with $35USD OFF made it abit more acceptable but the shipping is still ridicilous at ~$90.
I picked the receptors so that it'll work with my current prescription glasses and futureproofing it for future frames before committing to it 100%.
http://enchroma.com/shop/receptor/
But otherwise if you don't need prescription glasses but think you suffer from colorblindness, you could pick any of the frames going from $300-420USD depending on your choice of frames.
You can takes the colorblind test here if it has ever bothered you or are interested in one.
http://enchroma.com/test/instructions/
It would be interesting to try them and see the difference but it doesn't bother me enough to spend $500. Pretty cool anyway