How much will the IPhone 7 be when it releases this September?

I'm wondering if I should get the 6s, or wait it out to get the 7. But price could be in issue, as I'm not willing to go overboard on a new phone ($700, maybe even $800) since Apple hasn't even released the iPhone 7 full details and images, I'm a waiting for nothing? And if you're not sure how much it would cost, how much was the 6 and 6s when they were released?

The same price is the 6s is now. $199 on contract, $649 off contract.

They wouldn't release any info until the day they are ready to show it off, sometime in mid-September.