Acrobit's response to G.729 's cost:
Despite the fact that G.729 patents expired, G.729 continues to be a premium codec in Acrobits Softphone and Groundwire. There was a substantial upfront cost to acquire access to G.729 licence and the patent expiration in Jan 2017 didn't make the codec free for us. If we decide to change the price in the future, we'll make a public announcement.
Client at: Tangerine, VoIP.ms, Virgin Mobile