I have a pair Cypress push-button aluminum crutches. They are in good working condition.
1）Size: Adult
2) Adjustable height from 44" to 52"
3) Includes crutch pads, handgrips and pads
4）Weight capacity 250 lbs
5）Foam hand grips
Ask price: 20$ (Amazon original price is $64 ).
Cash only.
I can pick it up at Stanford campus for you.