It costs so much for two reasons.
#1. Because it is a real drum tumbler, not a vibratory polisher like most every other one on the market.
That means a higher grade motor, bearings, a belt, pulleys, and it also has a built-in timer to shut it off.
They run way quieter then a vibrator type polisher.
They also can handle liquid cleaners.
#2. Because it says RCBS on it.
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