These PLCs can be bought conplete or as individual components.        
        
Modules available        
(3)   1756-A10/B   Rev A01 10 slot Chassis                      $275.00 each        
(4)   1756-PA72/B  Rev D01 Power supply 120/240 VAC 50/60 Hz    $375.00 each        
(2)   1756-L1/A Rev K01 Logix 5550 Processor Unit F/W 4.42     $1400.00 each        
(4)   1756-CNB/B   Rev A01-ControlNet Communications Bridge     $200.00 each        
(4)   1756-M02AE/A Rev G01  2 Axis Servo Module                 $490.00 each        
(15)  1756-IB16I/A Rev E01 DC ISOL Input Module 16PT 24VDC      $230.00 each        
(13)  1756-OB16I/A  Rev F01 DC ISOL Output Module 16PT 24VDC    $280.00 each        
(2)   1756-N2/A Card Slot Filler                                 $10.00 each        
(3)   1786-TPR/B ControlNet Tap/Right Angle                      $55.00 each        
(3)   1786-TPYR/B ControlNet Tap/"Y"                             $60.00 each        
(32)  1756-TBCH A 0002 36 Pin Screw Plug & Standard Cover        $45.00 each        
            
These Units are used - In Like New Condition - with 90 day Warranty.        
Actual pictures of PLC         
For other automation supplies see:        
www.kkdepot.com/category.asp?cat=9