I got this on ebay for 19.95 with free shipping. Compared to the homemade feeder I had made with a 10 lb. coffee can and a pan lid, this has considerably reduced waste due to billing out. I think it is mainly the curled under lip, but the "vanes" probably help, too. You can adjust the gap between the bottom of the feeder and the tube, so essentially you can adjust the flow. My unit is warped (i.e., the bottom dish wouldn't sit flat if you put it on level ground), but this doesn't seem to have any major effect on its usefulness. When I have since looked at the same feeder in feed stores, it seemed that most units suffer the same problem. I didn't buy the top/cover as I was ordering online and it wasn't available from the same vendor with free shipping. I punched a hole in the middle of a plastic lid from a 5 gallon bucket and use that as a top and it works fine. I use it to feed a small flock (3-4 hens) and it can be filled with plenty of feed to last a while. I believe the Miller and Little Giant feeders are the same thing (model PHF11). Next time around, I would probably try the Miller 12lb. Galvanized feeder, because I prefer feeding from metal to plastic, but this one has served its purpose well.