After rupturing my quad two years ago, I needed this knee brace post-surgery to slowly get my knee to work again! Knee is now working fine, so this brace is no longer needed.
Though I do not recall what I paid for the brace, I know it currently sells for $165 from one of the manufacturer's affiliates, OrthoTape.
Note that in terms of sizing, this brace is considered "universal", there is an XL version that accommodates bigger thigh sizes (up to 38", where mine is up to 32"). specs from the manufacturer's website:
Drop-lock technology that allows patient to lock the brace at specific angles
Lightweight brace with protected edges to improve patient comfort
Anti-migration straps and anatomical paddles ensure a quick and secure fit
Telescoping frame from 18.5" - 27"
Thigh circumference 16-32"
Notice in pictures that the inner pads are worn, not sure if they can be replaced. Other than that, the knee brace works perfectly.