to purchase the parts seperately..
250W HQI magnetic ballasts are rated "M80" any ballats that says it will fire M80 bulbs will due.. they usally sell for about 50 bucks a pop, you would need 3.. but sometimes you can find them listed in the industrial parts on ebay for $30 or so with shipping..
electronic HQI ballast run about $120 each..
wing reflectors for as little as $30 each with sockets. this would be if you were going for mogals.. or just some mogal sockets for $8 and make a sheet metal reflector (some use some aluminum foil from the kitchen here..lol)
double ended sockets go for about $25 each.. most people seem to go with sheet metal reflectors with these.. and you need to go to the frame shop in town and get some UV
treated glass for these bulbs for a sheld, the glass on the bulbs do not have a UV
so if you have a canopy to put the lighting hardware into.. it could run you ~$195-270 + bulbs..
well.. long story short is you can get it for a little less..