It not only saves money but you know what you are getting. The guy at the packing house doesn't care about what you are going to eat in the same way that you care about it. This is why home made sausage, salami and jerky often tastes better; the person who made it was going to eat it themselves. If you process your own deer then you can do it the way you like and if something looks/feels/smells a little odd then you aren't going to throw it in the grinder.
That's a good point that I guess I didn't really think about before. So how many people here live in a suburb neighborhood and process in their shed? Cause that'd probably be my only option.