So I bought one of these since they had been discussed a few pages back.
http://www.amazon.com/Hometown-General-Buddies-Aluminum-Electric/dp/B004MN9YTY/ref=sr_1_3?ie=UTF8&qid=1344185020&sr=8-3&keywords=electric herb grinder
Arrived fast in typical amazon fashion. I was happy to see in included batteries... Fired it up and the bearing started squealing and then it stopped. Back to amazon..... I'll let everyone know if the next one works any better.....
Also Final review on the Kelly's Giant 3" grinder:
It arrived in about 5 days. Opened it up and it certainly included everything in the picture. Its a nice piece. quite heavy and hefty. It has a mirror like nicely polished finish although its not perfect. There are some minor discolorations or spots on the alloy which might indicate its not the highest quality alloy but this is a very minor cosmetic issue. Its quite mirror like. First observation was that 5 pieces was too tall, too many pieces, and that the top screen was way to course. Kelly's suggests you can remove the screen in the top piece and turn into a 4 piece with a HUGE storage area. I found a simpler solution though. Simply remove that section from the stack and the other pieces screw together to make a 4 piece!!!! I really like it this way... Its much smaller height wise in this configuration.
This thing makes quick work of the stickiest bud in good quantities. I shoved about 2.5g in there and grind out in not time flat. Grinding is easy with the large diameter and 50+ teeth. Its a medium grind great for rolling or the bong and works fine in my solo and TV. I generally prefer if its grind for the vape to run it through my Mendo Mulcher 4 piece vape grinder (smaller holes) for pass 2 and then into a container.
I like my coffee grinder too but there is something more satisfying to me personally about grinding by hand.
Right now this is my favorite grinder and I use it all the time. for $23 delivered its a bargain compared to my Mendor Mulcher or Sharpstone. Its a good solid grinder if you like that type of thing. Hope to get my little electric replacement soon so I can add that to the fray.