Sometimes one good quality item is better than five very cheap ones. If you sit in front of a screen for many hours, these small features make a difference. Sometimes I even measure an existing frame with a ruler before ordering anything new. At least here we can see more honest opinions and not only polished marketing content. 
 
If anyone is interested in real user experiences, I sometimes write short notes about the shops I test.
You can find one of the pages here:
[url=https://rentry.co/75948-the-true-cost-of-a-cross-necklace-my-quest-for-quality-jewelry]
click here
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I like when they mention whether the fabric has stretch or not, that detail matters a lot. Nose pads that are too hard leave marks and feel uncomfortable on the skin. I think this is one of the few real advantages we have compared to shopping blindly. Sometimes I experiment with different materials just to see how they feel in daily life. Bad lenses can cause eye strain, reflections and headache when you wear them for hours. 
 
Just sharing my personal feedback.