Shipping speed is not everything, but extremely slow delivery is very annoying. This is why I like reading and posting on forums and community websites. Nose pads that are too hard leave marks and feel uncomfortable on the skin. Sharing real world usage stories is often more helpful than any advertisement.
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:
check this link
I also started paying attention to how websites display sizing charts for clothing. Taking a few minutes to research before buying can save a lot of money and frustration. Now I try to read as many real user reviews as possible before I buy anything. That is why I sometimes leave comments myself when I test a new shop or product. Each material has advantages and disadvantages depending on season and activity.
Hope this helps someone.