Are you still selling iphone 7?

Apple no longer sells iPhone 7. Whether an Apple store may have stock available for a phone released so long ago, we wouldn't know. We are only users on this forum. Check you local Apple Store, but it's unlikely a phone that is no longer made or sold by Apple would still be sitting on their shelves in any form other than a Refurbished iPhone 7.

No. The 8 is the oldest version Apple sells.

Check it out yourself --> https://www.apple.com/