I was curious what was inside, what does $110 get you?
Looks like a 25W 110V universal motor and a NXP BT136-600E triac controller. The rotor is light aluminum sheet, and the motor is mounted with rubber isolators.
The control panel:
Has a speed control (top), power switch and indicator (middle) and a mechanical timer (bottom). Notice that this control panel is different from the external picture of the unit which uses an illuminated switch where this one has a separate light.
Details of the motor controller:
I noticed that if I put 115mm centrifuge tubes into it the tub runs into something inside. I put a camera inside and closed the unit to see what the problem was:
Turns out that modified power indicator is in the way. I'll fix that by 3D printing some collars to hold the tubes up a little farther so that they clear the indicator.