To some extent, I agree. I buy lots of glasses from Zenni but they are hardly top of the line! They are somewhat flimsy, conservative in styling despite having a choice of thousands of similar looking frames, rarely have sprung temples, are a bit iffy on the PD and VERY hit-or-miss on centering the lens to the eye. I did once manage to order a pair of vaguely modern frames from them but they deleted the style pretty quickly!

I agree that Luxxotica makes el-cheapo RayBans to screw customers in the US market. I am a bit surprised that Serengeti does as well