TechPowerUp published a review on the Montech AX120 PWM RGB Fan
A quote from the article:
Montech aims to challenge the status quo of RGB fans in 2023 being overly expensive with the new $9 AX120 PWM. Available in black or white color options, these 120 mm fans use standard connectors and 20 LEDs per fan to put forth a compelling cooling solution that is quiet in operation too.Montech AX120 PWM RGB Fan Review