lighting cost?

how much do i need to invest into my lighting set. right now im not working with much and i need to get more light. what would be the best for my plant and any info on price would be great thanks

it all depends on how much ure willing to invest..... you can spend as little or as much as you want..e g

CFLs are energy saving light bulbs... and there good if your on a buget, get the highest watage. can getthem from £1 in u.k n $3 in u.s

HID lights are optimum but expensive..... 600watt cost bout £70