I have the exact same unit and pay a Hell of a lot more for it; refurb or not, I don't think you can go wrong at that! Mine's been great, the only beef I have is that the hose is so long that I wish there was a reel included that would make it easier to put away. The machine itself is excellent.
read what other owners have to say about it... Amazon.com: Karcher K 3.67 M 1,750 PSI 1.5 GPM Electric Pressure Washer: Home Improvement
I am actually really interested in purchasing this, but I keep reading mixed reviews. The ones on amazon rave about it and the ones that woot provides say its garbage. Someone please sway me! lol
The problem with products like this is that there is no consistency anymore. You may buy it and if may be flawless (like it has been for me) OR it may totally suck. At least with a new one, there is a warranty to cover you if it sucks...that's the risk with refurb. If the price is low enough, the risk is worth it. That part is up to you to decide...
The Karcher being sold on Woot is a K 3.47M. living linked us to the K 3.67M on Amazon which is a different model. I have a K 3.67M which I purchased from Amazon because I get Free 2-day shipping with my Prime account. Anyways, I can tell you that while I was nervous about all the issues I read regarding Karcher pressure washers, my Karcher K3.67M has been working flawless for months. I use it once or twice a week and I haven't had a single problem so far.
read all the one star reviews on amazon. they talk more about the company and getting parts. and less model specific. all in all i've got smoking deals on woot for other stuff. but i still live by you get what you pay for.