Double those numbers for the longer 220 films. The major draw backs to medium format is the size and weight of the cameras and they cost much more than a 35mm. Lenses are also very high in price and are much slower and larger than 35mm lenses. You don't have many choices in choosing a lens as most manufacturers offer only one type for each focal length and there are no independent lens makers. 35mm SLR's when compared to medium format provide convenience, auto features, larger selection of lenses including zooms, and cost a lot less.
Film also costs less per each frame .
Medium format cameras are much slower to operate. This however, can be to your advantage as they force you to slow down which enables you to pay closer attention to details. I have been using medium format for eight years. I never forget the first time I saw my images. They were so impressive that they made my 35mm look ridiculous.