The best price for Acer Predator XB253QGX 24.5in is $569.00. This is presently the cheapest offer found from comparing prices from 2 shops in Australia.
Response time is measured in milli-seconds (ms) and represents the time it takes for one pixel to go from active (black) to inactive (white) and back again. Needed to adapt to the constantly changing image on the screen. The lower, the better.