yea if you shot a movie 16mm got it transfered to a external haard drive in HD and edited on mac using final cut or Avid on PC you could make it fairly cheap.
hate to start an argument, but transfer from 16mm is most definately NOT cheap, unless you have a buddy at a lab or something. Film is extremely expensive. So doing what you are talking about would most definately NOT be cheap. If you have the money for film stock, shoot 16 or 35mm. If you dont, stick with DV or HD. Shooting at 24p and being a good DP will give you almost the exact same effect as pricy film stock in all its glossy glory.