I only bought 1 NitroPro servo (CT1) that was rebranded under the JTP logo which stands for Jared Tebo Products, at the time when I bought the servo Jared Tebo was ranked the #1 fastest driver in the world and I bought that servo directly from Jared Tebo himself when he showed up for a local race event in my area, he currently sells the CT3 servo for $160 here:

https://shopjtp.com/products/jtp-ct3-1-8-servo