Sounds like I would be feeling remorse if I were you too. I refuse to pay more than $200 for a pair up to this point in my life. No offense, but I don't want to be "that guy" sporting $300, $400, $600+ designer shades. I just got some new RayBans. They run about $170 in most stores, but only paid $59 through a family member working at an optometrist office. That was their cost price. Imagine the markup on the designer ones you probably bought.
Sounds like you are happy with the way you look, so maybe it was worth it after all.
This is as designer as I get;