Talking about this?
http://www.lnt.com/product/index.jsp?productId=1958641
You can get higher cap ones for half the price.
http://www.unbeatablesale.com/lest003.html
They are all junk IMHO. You ether need to rent one, pony up the money and buy a commercial unit or get a power washer. eBay can have some good deals.