Looks to be the cheapest 144Hz IPS 1080P 27" gaming monitor on the market normal price is around $500.
Theres also this Acer VG271 with the same specs and same price
https://www.ebay.com.au/itm/Acer-Nitro-VG271P-27in-FHD-144Hz…
Side-by-Side Comparison
https://www.rtings.com/monitor/tools/compare/asus-vg279q-vs-…
144Hz, IPS, 1080P, g-sync compatible combo? Had no idea this existed. Very, very tempted.