What's the best CHEAPEST lighting for flowering??

[Tox]

I don't have alot of money left to put into my system and they're going into flowering stage very soon...I don't have 200 dollars to spend per HPS light is there a cheaper way? Or does anyone know where i can pick up a cheap HPS? Considering the places i've called here are contractor only...:wtf: I'd appreciate your input considering this is the first grow 'round for us:thumbsup:Thanks in advance!!

Love, Tiva

CFL's