you can get started pretty cheap really. 125 for the grinder, you can use anything from a cardboard box to a fridge to a bbq for a smoker, and another 50 for casings, salt, and seasonings. use the grinder with stuffer attachment or an inexpensive manual stuffer.
you can get started for 100-150 if buying used equipment.
ill post a pic of the grinder my grandfather rigged up. cheap and heavy duty...