I ordered from $19 (Zenni Optical) & Optical4less. My order form Zenni came in today. I ordered a rimless memory plastic frame, the quality is average, my Rx is -4.00 and the lens is quite thick compared to my previous pair of Ray Bans. But I only paid $33 versus $300. I would recommend the anti reflection coating, it works great. I actually see alot clearer through these than the Ray bans. The only problem is that I specified the wrong shape when I ordered. So I ordered a different pair, semi-rimless metal this time with 20% gray tint, something more traditional ($30). I'm also waiting for my glasses from Optical4less, also a rimless but with metal frame ($65). I know it's significantly more than the others but, they had an option for thinner lenses. The ones from Optical4less is my main choice so I still have my fingers crossed. In conclusion, even though the Zenni glasses were not exactly as I envisioned them, I was still very satisfied. So one down and two to go!
3 pairs = $128
Ray Ban = $300
I'm still Ahead