iPhone question?????????????

iPhone question?????????????

I want to get myself an iphone off ebay or apple.com, but my contract doesnt end til a year and a half, I don’t want internet or a new contract. I just want the iphone, unlocked and contract free. is that even possible? if i get the iphone, active it over my old phone can i get wifi to get on the internet? or do i HAVE to get a internet plan?

thanks