Is there a cheap equivalent of Sabertooth Dual 25A Motor Driver for Arduino?

Question

Arduino

I am looking for an analogue of Sabertooth Dual 25A Motor Driver for Arduino. The price seemed quite high to me.

1. Is there a cheaper equivalent?
2. Is the price of this controller adequate? (124.99 USD)
3. Perhaps an analogue of a conventional bicycle controller with a control voltage of 1-4.2V?

A powerful controller for two 24V/250W motors is required.
Additionally, a sharp response to a change in the control voltage is required. Smooth acceleration, alas, is not suitable.

Thanks in advance.

Answer 1

I am looking for an analogue of Sabertooth Dual 25A Motor Driver for Arduino. The price seemed quite high to me.
Perhaps an analogue of a conventional bicycle controller with a control voltage of 1-4.2V?

Perhaps, but this one, which is cheap, I would not put in a responsible place.
Yes, and I wouldn’t put it on the road, because driving a collector motor is a trivial task for a person who has an arduino.

Additionally, a sharp response to a change in the control voltage is required. Smooth acceleration, alas, is not suitable.

Well, so proceed from these requirements.
What does money have to do with it if you have special requirements?