Sorry to single you out, TB, but, no they didn't pay a steep price for one of the premier PMDs in the league. They paid the going rate. A player of Yandle's stature is normally going to cost 1) a quality roster player (Moore), 2) a quality prospect, (Duclair), and 3) a #1 pick. The 2nd rounder is the price for getting AZ to retain half his hit. If anything, the Rangers slightly underpaid for Yandle because John Moore is the roster player going back, not a more valuable forward like Hagelin or Miller. Some people are really underestimating what Yandle adds to this team.
I cannot reiterate this enough...only one d-man in the league currently has more assists than Yandle - Kris Letang, who gets to run a PP with two of the five best players currently in the league. Yandle is doing this on one of the worst offensive teams in the league.