I came across a pretty well used Ninja while driving by a local pawn shop. I stopped by and the clerk had no idea he had it when I questioned him about it. He then went on the computer to get a price (I think he tried to google it) but could not come up with one. He asked me if I knew what it was worth and I said no (wink wink). He then said $250 with a "questionable" expression on his face. These extractors are over $1000 online. Like I said its pretty well used and I did not see the attachements (hose etc). I think if I offer him $150 he will take it... What do you guys think? Thanks in advance for your input. Any idea how I nwould test it while there???