ASUS VG278QR 27” Gaming Monitor 165Hz Full HD (1920 x 1080) 0.5ms G-SYNC Eye Care DisplayPort HDMI DVI, Black

165Hz refresh rate is great for gaming, and since it is Full HD it can be driven by lower end graphics cards too (I used mine with a really old Nvidia 960M laptop GPU and it hit max framerate on all classic FPS games)

Amazon link: https://www.amazon.com/dp/B07XV1519W?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1

It has been used for around 2 years, no scratches, dents or any issues at all and in complete working condition.