adidas Adidas Yeezy BOOST 350 V2 SIZE 7.5

I believe I am foolishly listing these for 50.00 but I have to admit I know nothing about them. I only see the light research shown in pic. I believe these are a mens size 7.5 or womens 9 but could be worn by an adolescent as well with appropriate foot size. If these are worth a LOT more than good for you and if I am entirely mistaken on their value please let me know!!! I am all ears!