Medium Format photograhy is very often viewed as a big step up from 35mm format photography. It is certainly the domain of the serious photographer, whether professional, aspiring professional or experienced amateur.
The price is often the most significant factor that stops people stepping up to medium format, photography, with fully featured, automatic cameras regularly coming in at well over $4000. Before you are put off for life though, at the other end of the market, for around $400, you can easily find an entry level camera. Obviously cameras in this price range will not be too overloaded with all the latest state of the art features, but you should be able to explore the medium format world. For many former aspiring professionals the step up to this format has led to increases in income quickly offsetting the initial expenditure laid out.