[KarlInOhio]

I would love to be able to try them out for a few days without having to pay for them and ask for a refund if they don't help. $350 is a little expensive. I would also like a non-sunglasses version which would have 100% transmission in the non-notch wavelengths. I guess the lens would look blue for a notch in yellow.

[Yardstick]

I’m seeing refurbished Enchroma glasses on eBay for around $250. Still pricey but not quite as bad.

Also there are some other brands selling for under $100. Some appear to have nearly clear lenses with only a slight bluish sheen. Presumably they’re using the same tech as Enchroma but you do wonder how they got around the patent.

https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2390352.m570.l1311.R1.TR4.TRC2.A0.H0.Xcolorblind+glasses.TRS0&_nkw=color+blind+glasses&_sacat=0