This is one of those "it depends" type of questions. The way you word it suggests you are genuinely concerned about the economics of hunting. Well, you need a weapon (bow, rifle, shotgun, handgun, spear, knife, whatever) and you need the time to do the hunting and you need to find a place to go hunting. One of the expense factor of hunting is finding a good place to go, giving consideration to where you live, where the deer live and whether you hunt on private property or public land. Finding a place it hunt is usually harder than getting your hands on a gun and having the time to go. Take a Firearms Hunter Safety Training Course (required in many states to get your first hunting license) and that will answer a lot of questions. Do some reading. You can hunt on public land, camping and cooking your own meals, at no more than the cost of the hunting license and your food and equipment.