‘It was a large price, but Armstrong pulled the trigger Friday on a trade with the Buffalo Sabres for goalie Ryan Miller and forward Steve Ott. The cost was goalie Jaroslav Halak, forward Chris Stewart, forward prospect William Carrier, a first-round pick in the 2015 NHL Draft, and a conditional pick that could turn into the Blues’ first-rounder in June if St. Louis advances to the Western Conference Final or Miller re-signs with his new team.’