Slush machines are available on free loan from some companies - obviously you are tied to their consumables.
Recon machines are available and as with most new machines include a substantial consumable pack with them (syrups, cups etc)
Always haggle with these companies if you go down this route, most have a fair bit of flexibility built in.
In a time of universal deceit - telling the truth is a revolutionary act. George Orwell
When the debate is lost, slander becomes the tool of the loser. Socrates