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. In the end there is no perfect shop, but some stores are clearly more consistent.

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:
<a href=https://amelia.airwaysaviation.com/blog/index.php?entryid=115340>
click here
</a>

Trendy pieces are fun, but I only buy them when the price is reasonable. Good stitching usually means the item will not fall apart after one or two washes. Forums, blogs and communities create a kind of collective memory for shoppers. Having a tracking number that works on common sites is very convenient. I also check if the lenses have any blue light filter or anti-reflection coating.

Just sharing my personal feedback.