Not kidding. Currently Carp is set to be the 8th most expensive K in 2017, but he was 12th last season. There are some pending FA kickers that you aren't seeing on the 2017 list.
http://www.spotrac.com/nfl/free-agents/kicker/
Sure, you could draft one or pick up one on the cheap. Or you could easily wind up paying as much or more for a quality veteran - especially when factoring in Carp's dead money. Even in your example - which would indicate an unproven or lower tier kicker - it's not a lot in the scheme of a $168M cap. And it'd probably be a lot less than that. I'm not even advocating for keeping Carp, I'm just saying that there isn't much, if anything, to save there.