Well in my opinion,it's really up to the previous owner.
Did the indvidual use it with care, were there any probs with the pres,and fader or other circuitry repairs. I have owned mine for approx 8 months and only use it when I try to record on CakeWalkP9(luv the pre's,yet I'm still learning 'puter based recording). A friend of mine has had the 1402 for approx 2 years and he works the sh#t out of it and it is still in excellent condition.
Is there n-e way you can check it out and see if there are any probs with it? What is the asking price?