That is $23.10 plus add in the expense of some motor to provide the armature that you must spend hours rewinding and then your magnet wire, and about $0.50 for the 2 caps.
Even the Do-It-Yourselfer can barely make the equivalent of an 'R-Tune' for the same amount of coin unless they happen to already have the parts laying around.
...hence the reason why I never wanted to get into the motor-making business...
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-- It is by will alone I set my mind in motion...