Loctek Heavy Duty Gas Spring Dual Arm Desk Mounts Fits 10"-27" Monitor (D5DH) - $50
https://www.amazon.com/gp/product/B00X1CPX3S/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Two Dell 24" monitors also available - $100/each
https://www.dell.com/en-us/shop/dell-24-monitor-s2421hn/apd/210-axhj/monitors-monitor-accessories?gacd=9694607-1003-5761040-266790354-0&dgc=st&&gclid=CjwKCAjwh7H7BRBBEiwAPXjadtS5O8Ba7ZBEMxPe2OETgPfsUalUsbc7RW5TPTUoaAQOL7sbaUlh8xoCrG0QAvD_BwE&gclsrc=aw.ds

Pick up in Menlo Park near Stanford Campus.