Actually the design is quite nice. The unit has a dust enclosure and a dump tray. For refiners applications you remove the solid door after a crush cycle and put in the dump door. A dump door has slots so the powder comes out but the media (steel balls) stays inside. Then all of the powder collects in the tray which you slide out to empty.
The enclosures for mills that size (just shy of 20" long and 20" diameter) cost more here in the states than that mill costs complete.
I would like to know the size of the motor and the speed, as well as the gauge of the steel on the cylinder. A picture to the door to the mill would be nice too. I don't have an ebay account so i couldn't inquire.
I would order one if it is sturdy enough but I want to be sure because the customer pays the return freight even though there is a money back guarantee, and the freight will be pretty steep. Maybe I could get 1 from Harbor Freight!