How do you know if an eyewear store is really trusted and not just a pretty storefront?

Hi, I go by reviews and how detailed the product descriptions are. At Classyeyewear everything is clear: and measurements, and photos, and brands are normal - I took there this model https://classyeyewear.com/collections/carrera-men-s-eyeglasses from the collection Carrera mens eyeglasses, satisfied as an elephant.