Sounds like you are in a much better place RE money, I wouldn't want to move a bandsaw like that down stairs either! All flat would be a different story.
See the saw under power and it should be "calm" no excitement and no vibration. The tires are probably in pretty good shape but take a look, the good thing about MM tires is they snap on and are realtively cheap compared to say the vucanized rubber Agazzani's which although they last longer pretty much need to be sent out to refurbish. When you look at the saw bring a tape and make sure it is 16", it should be but make sure, it will probably be about 15 3/4" below the guides just make sure it isn't under 14", in the excitement you could mis-judge that and he may not be lying just taking the current specs, double check the motor plate says 4.8hp also, I am sure it is since only the ~12" resaw MM16 came with less.
Now I am more comfortable with the deal as clean as it looks I would buy it for the savings you are looking at.
Of all the laws Brandolini's may be the most universally true.
Deep thought for the day:
Your bandsaw weighs more when you leave the spring compressed instead of relieving the tension.