Performance deteriorates too quickly and very messy
Positive Product Points
Relatively powerful, decent grind range, heavy for a plastic machine
Negative Product Points
Clogs easily, grind bin leaks coffee
This was my first attempt at upgrading from a blade grinder, and at first was fairly happy with it. However, the discharge chute clogged too easily and was very difficult to clear, since the chute has a guard over it (which can be easily defeated by cutting it way). Still, the chute fills with very fine coffee that can become quite "hard" and difficult to remove.
The cover on the grind bin does not fit snuggly enough to prevent coffee from escaping. With all the static this machine produces, coffee gets "everywhere" and seems to be messier than other grinders I've since owned.
After a year of use, the amount of very fine grind being produced made the clogging problem even worse, and I started having problems with choking my espresso machine even with the "right" grind, and lots of sludge in my drip coffee -- both a direct result of the fine particles being produced.
Purchased from a retail store -- nothing special to report except it appears the price was too high.