How much would it be for a new iPhone 6s with AT&T Next?

So sadly, AT&T doesn't have their 2 year contract anymore and I was wondering how much it would be for a new iPhone. I currently have an iPhone 5s and my 2 year contract ended in January. It it roughly about $700?

Divide the cost of the phone by 24 (months) and that's how much you'll pay every month for 2 years, in addition to your service and data costs. That's the new way it's done. No more 2-year service contracts.