Castle Pricing for Non warranty

[BrianG]

Have the monster with sensor ports. Sensorless is smooth for the most part, but TBH, sensored operation during starts/low speed and braking is even more so. And while we're at it, create an optional add-on endbell which would contain sensors which could be attached to the current motor line.

I liked how the MMPro had sensor ability with fallback to sensorless if the wires were broken or whatever.