Cheap high-index lenses!

[cheap eyeglasses]

Which site is the best for high-index lenses? My last pair has been damaged by my 8 years old naughty nephew, it took me $324.00 from my local optician, here is my strong prescription, my OS is -8.25, and -8.50, , I always need to wear ”coke-bottle” lenses in the old days, heavy and thick, I really hate them, but I am not planning to purchase that money on lenses any more, I just need someone can tell me which site is the best choice for buying high-index lenses!
Thank you!