I don't think you'll find a new IPS monitor for that price - a TN panel is probably what you'll have to get.
Here's an excellent deal for a 24" 1920x1080 monitor from Walmart. You probably won't find another new one of that size for $129 anywhere. AOC is a good brand - just not as popular as ASUS. Over 200 reviews and 94% said they'd recommend it to a friend.http://www.walmart.com/ip/AOC-2436VW/13060462?srccode=cii_10043468&cpncode=31-21872394-2&adid=1500000000000036337750&veh=cse
Correction - Amazon has it for that price too:http://www.amazon.com/AOC-2436Vw-24-Widescreen-Monitor/dp/B002LITFYQ/ref=cm_cr_pr_product_top