Just to add another option to the list.
AGF Servo. They have many option at several price range. From coreless potentiometer servo to brushless magnetic encoder servo.

I just ordered mine which is supposed to arrive around this week but we have a national holiday this week. So, it will be here on next week.

This is the model I ordered. Ordered it for $79 shipped.


​​​I bought it directly from their factory sales rep. You can find her here.

Also if you guys can take a look at inside of the servo in the video below. Its a different model, but the system is almost similar.
https://youtu.be/tqdol6rTbDg

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