well it was $25 with $7 shipping. I went ahead and got it, though I could probably have made it. I am fine with the cost, I just want to get everything buttoned up before the trip to the Smokey mountains where we will spend 6 nights without hook ups.
For future reference, since google already has this thread as a result when searching for hooking a battery to a Coleman popup I will add that the dealer who has the old stock of these parts is "midland rv" in Michigan. (http://www.midland-rv.com/)