I got it from Amazon for about $80. I wanted to get 2 or 3 (I was thinking of skipping putting in a sub panel at another location), but figured I better see what 1 is like. As soon as I got it, and looked back on-line to order another, the price jumped more than $30. I still only have the one. I am checking on prices every so often, but haven't found another deal I liked enough to jump on it. I did see a 50' welder cord for about $120 on ebay recently.
Here is what I got;
[ame]http://www.amazon.com/Camco-55195-Extension-Cord-Handle/dp/B0024ECIP0/ref=sr_1_1?ie=UTF8&qid=1336760069&sr=8-1[/ame]
looks like the price is below $110 now, but still a far cry from my $80