answer:I love my glasses at a 9. They cost $300. I don’t know if this screws up your numbers… but my glasses aren’t prescription. They used to be prescription on the right side and plano on the left, but they were prescribed when I had an infection and, lo and behold, 3 days of drops made my eyesight 20/15 again and I didn’t need them. But I loved them so much that I had a plano put in the right side as well. I wish I could find them :(