Refurbished Acer SB220Q 21.5" Widescreen Monitor IPS Display 1920 x 1080 75Hz Free Sync 4 ms $60
Seems to be "limited" but I always see these up now. Seems like a very good monitor for the price. No Vesa mount tho, but for $60 it''ll be fine. Can be a good secondary monitor. Slim bezel and design.