If you want to get into Med Format real cheap, Holga's can be bought new for around $ 50 or so to try it out without having a lot of money tied up. There may even be one like this with a better lens and body. Seagull used to make a 6x6 that was very reasonable, but for about the same price you could probably bet a used Yashica.
For $50 one can buy a real used MF camera.
Warning!! Handling a Hasselblad can be harmful to your financial well being!
Nothing beats a great piece of glass!
I leave the digital work for the urologists and proctologists.