this is probably the cheapest:
http://www.amazon.com/Acer-GN246HL-Bbid-24-Inch-Display/dp/B00KO4518I/ref=sr_1_3?ie=UTF8&qid=1453995875&sr=8-3&keywords=1ms+144hz
I saw an Acer or ASUS (I forgot which) 23.5" that was 1ms for only $160~ and another one for $99.99