Here's the electronics:
$299 G540 http://geckodrive.com/product.aspx?c=3&i=14469
$078 Two $39 KL23H276-28-4B 270 oz motors for X & Y
$049 One KL23H284-35-4B 387 oz motor for Z
$060 One KL-350-48 48V/7.3A power supply.
$010 Estop switch
$007 3 Home switches
$009 Straight thru parallel computer cable.
$149 Mach3 license when purchased with motors.
All of this is available from Keling:
The X3 costs more to CNC until we find a way to use G540 with it also.