First and foremost, thanks for posting the sale, Mike! Always appreciated that you help everyone find deals on the products the community needs!
Here's my experience with this product:
The Mastercraft tumbler is spot-on identical to the 5lb tumbler sold by Harbor Freight in the US.
My HF tumbler recently died. There are plenty of reviews on Harbor Freight's website claiming that the tumbler stops working very soon after purchase. HF support informed me that the capacitor in the unit is usually the source of the problem, but mine also had the compounding problem that the motor lubricant separated and the motor seized up. There are no bearings in this motor, only bushings. After replacing the capacitor and lubricating the bushings I freed up the motor and it started running again, but it got so hot after only 1 hour that it stopped (thermal cut-off perhaps?), and I couldn't touch any metal of the motor for 2 hours because it was damn near incandescent! Seriously, it is very much a fire hazard even in only the 1 hour that it runs.
Hopefully the Mastercraft models run more reliably, but as they appear identical to the HF tumbler, I don't trust it. Adam loaned me a Lyman Turbo Pro 1200 tumbler, and from my limited experience, I think it's a much better quality product (and only about $30 more at Bass Pro). It's made in the US, it's lighter, and it even has a fan on the motor. I ran the Lyman for 3 days straight, and it didn't even feel warm.
FYI...