what do u think?
http://cgi.ebay.com/400W-HPS-MH-Digital-Electronic-Ballast-Dual-Arc-Bulb-/270608539588?pt=LH_DefaultDomain_2&hash=item3f01869fc4
or
http://cgi.ebay.com/400W-HPS-MH-Digital-Electronic-Ballast-Dual-Arc-Bulb_W0QQitemZ270608539588QQcategoryZ42225QQcmdZViewItemQQ_trksidZp3286.m7QQ_trkparmsZalgo%3DLVI%26itu%3DUCI%26otn%3D2%26po%3DLVI%26ps%3D63%26clkid%3D5551968643086999510
http://cgi.ebay.com/400W-HPS-MH-Digital-Electronic-Ballast-Dual-Arc-Bulb-/270608539588?pt=LH_DefaultDomain_2&hash=item3f01869fc4
or
http://cgi.ebay.com/400W-HPS-MH-Digital-Electronic-Ballast-Dual-Arc-Bulb_W0QQitemZ270608539588QQcategoryZ42225QQcmdZViewItemQQ_trksidZp3286.m7QQ_trkparmsZalgo%3DLVI%26itu%3DUCI%26otn%3D2%26po%3DLVI%26ps%3D63%26clkid%3D5551968643086999510