there's one for sale on seattle.craigslist, weighs 700lbs.. i can see where it would be useful in places but for most "farm" settings a wee bit small..
i have seen something liek this used before. It is mainly when you need to go into a building and do a lot of digging for like plumbing or like in the basement of a house. Id like to know how much it is. I might just wnat one. I could use it for some of the small jobs i do.
The guy who came out to pump my septic tank was carrying one something like that in front of the tank on his truck -- a little excavator that he could unload with some sort of hydralic lift. He said that they didn't use shovels anymore if they could help it. Since I dug down to the tank myself before he came, I can't say as I blame them