I read about this over at TN. The ReadyWelder forums are having a giveaway this month. http://www.readywelder.com/forum.htm
Eligibility is open to forum members with 5 positive posts. There are only about 20 people right now that meet this requirement. If they have enough activity they'll give away 3 of them. I think that they are going to have difficulty giving away only 1.
The welder hooks up to 1-3 car batteries to get the power. It's pretty neat and would be good to have on the trail to do repairs.