Google.. "STC-1000" .. Is what I use and it keeps my tank between 76.46° and 77.56°. And you can generally get one to your door for around $35. They are professional units and are sold by the millions.
I have my heater and my over tank fans connected to it. It is rated at 120VAC @ 30 AMPS. It comes with the probe. You connect the power, the probe, and there is a place for the heater and the chiller (or in my case the fans). HOWEVER, you need to be fairly good with wiring, because it is designed like many professional units with wire clamp connections as used in machine wiring. AND, the instructions are trade jargon and may be tough to understand if you aren't wiring friendly.