It... Depends.
The 2010 CMPs from last year were designed as companion adventures to go along side the Season 3 stuff. As such, they had a similar pay scale (WHich scaled by table rating) and used the S3 Karma scale (max of 6 Karma if you hit every objective and were deemed a good, fun roleplayer.
The 2011 CMPs follow the Season 4 model, which updated things slightly using the SR4A karma model, and streamlined the payscales (and removed Table Rating). Pay depends on the overall difficulty of the mission, as does Karma. An easier adventure may pay as little as 5K. The average adventure probably averages about 10,000¥. High end adventures top out toward the 20K scale (THese should be fairly rare though). Karma generally is 8 or 9 max Karma per adventure, with easier adventures maybe topping out at 7.
Also as a note, the 2010 Missions are being run again in limited numbers at Origins and Gen Con this year (And possibly Dragon Con). We're retooling them slightly to remove Table Rating and put the pay and karma scales on par with the 2011/Season 4 stuff, as we're assuming that most players have moved over to Season 4 now.
