iphone 6 plus camera cracked

I have had an iPhone 6 plus since December and did not purchase insurance. My phone was shut in a car door, and the back camera lens cracked. I'm not sure if it is just the lens or the entire camera that must be replaced. I am curious as to advice on the best course of action for a repair (or thoughts on camera or lens) as well as any ideas on cost for repair. I am 2 hours from the closest apple store and cannot get anyone on the phone that can even give an idea on prices. Any assistance/thoughts welcomed.