Those pics you posted are not the smuggler, but just the standard seat. The smuggler is a little trunk that gives the rider a backrest and takes the place of the rear passenger seat.
Front saddle no heat, Concours 1400 $289
Front saddle Heated, Concours 1400 $459
Rear saddle no heat, Concours 1400 $209
Rear saddle Heated Concours 1400 $369
Smuggler Trunk Painted Concours 1400 $799
Ovalbac Leather Backrest (ea) $229
If you need the passenger seat on occasion, you would need to purchase the two seats and the smuggler and if you want it, the backrest for the passenger, so you are looking at $1530 for that package and if you want heat all around, it jumps up to $1860. That's a chunk of change!
http://www.corbin.com/kawasaki/kc8fre.shtml