Newegg flash has CORSAIR ML120 PRO RGB, 120mm Premium Magnetic Levitation RGB LED PWM Fan, CO-9050076-WW. 3-Pack with Lighting Node PRO is having promotion with $119.99 – $35 = $84.99
If you are looking for Corsair RGB fan, this is a decent price deal.
I know there are other RGB fan with significant lower price tag, but some people just prefer corsair ones than the others.
https://flash.newegg.co
If you prefer the non-RGB version and just need the fan, Amazon and Newegg have Corsair ML120 Pro, 120mm Premium Magnetic Levitation Cooling Fan CO-9050040-WW on sale for $19.99.
Amazon-Link
Newegg-Link