Starting the Seeds Indoors ...

I want to be able to start my tomatoes, peppers, pumpkin, cucumber and some of my lettuce indoors to get a head start on the growing season.

I'm considering buying a grow light from www.leevalley.com, but it costs $215 (maybe I can get it second-hand).

I'm also considering getting a kit to make a grow light from http://www.homegrownlights.com/14wled.html. This is much cheaper at $45 (US?) for about a square foot of grow space.

... I need to investigate this further and check up on energy usage -- I want to keep this efficient.