I also pay attention to return policy and customer service response time. When it comes to eyewear, the small details really matter over time. I think sharing honest feedback helps other buyers avoid the same mistakes. Recently I have been testing several online eyewear shops to compare frames and lenses.
If the first order is a disaster, I prefer to move on and not waste time with support. Comfort around the heel and toes is more important than super fancy design. If they ignore basic questions or reply with copy pasted text, I become suspicious. I also check if the store explains how to measure PD and frame size clearly. Sharing real world usage stories is often more helpful than any advertisement. Good stitching usually means the item will not fall apart after one or two washes.