new user, a few questions. please help!

i have an 01 740i , and 2 dayz back my LCM lights control module was blone, i got tht fixd, but one of my xenon head lamps are blown. it comes one, but its porple in color...its a wierd diffrent color. is thr any link for me to get a cheap bulb ? bcoz budd's charging me around 390.00 to get tht fixd.

need help with this issue.