If anyone is looking for a kit that includes a strobe with 600 watts of power, a C-stand, and a softbox, take a look at this package. It's from Adorama for $598.95.
Flashpoint XPLOR 600 HSS R2 Battery-Powered Monolight Kit With C-Stand and EZ Lock 36" OctaBox (Bowens Mount)
Flashpoint XPLOR 600 HSS R2 Battery-Powered Monolight Kit With C-Stand and EZ Lock 36" OctaBox (Bowens Mount)