I'm not sure what to ask....had an opportunity to buy a Graco 700 Series Turbine Sprayer with a Turbine Gun & hoses. It looks like it's in excellent condition. Paid $100 for it. I've always used a Minwax spray can or brushed on poly. To those that know.....just what do I have? Fellow I got it from said it cost over $700. It seemed like a good deal so I rolled the dice. Any thoughts?