The cost of a Boeing 737 ranges throughout models and configurations. The "Next Generation" Boeing 737s (600 - 900 versions) have a price range between 50 and 85 million dollars US.
The Boeing 737 is approx (depending on wich version) 42.1 m long, and the Boeing 747 approx (depending on wich version too) is 76.4 meters long. The biggest Boeing 737 can seat up to about 190...