Many people do not mind waiting if they understand what is going on. I have learned to avoid items that look extremely different in every product photo. Comfort around the heel and toes is more important than super fancy design.

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/29389-my-online-search-for-stylish-comfy-reading-glasses]
check this link
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Sometimes one good quality item is better than five very cheap ones. The same is true for metal versus acetate frames for glasses. It saves a lot of trial and error for everyone else. I also check if the store explains how to measure PD and frame size clearly. I enjoy reading threads where people honestly share what worked and what failed for them. Nose pads that are too hard leave marks and feel uncomfortable on the skin. For example, I compared cotton, polyester and mixed fabrics for similar clothing items. Forums, blogs and communities create a kind of collective memory for shoppers.

Hope this helps someone.