Glen, it is hard to say what it is worth, but here are some data points. Look at the hour meter. If it is like the B6200, it only shows 3 digits for the hours, so it could be 160, 1160, 2160 depending how many times it has rolled past 999 hrs. If it only has 160 hrs, the tires should look almost new. I just sold a 1990 B6200 hst 2 wheel drive with a 48" mower deck showing 366 hrs for $2500. 4 wheel drive would have added another $500 to $750 and the extra horsepower should be worth another $500. These are just my opinions. Remember, what it is worth is really what it is worth to you.
I don't know about the snow blower. I would ask a dealer.
Good luck,
John