Cost
 $150 - Solar panels, Frame for panels, two 12vdc CFL bulbs
  $30 - Dump controller from ghurd plus wiring and resistors
  $45 - 135 amphour Deep cycle batter from a Surplus Blemished battery store
  $25 - Ice Cooler, I found this one in a parking lot
  $25 - Fuse panel, no cost to me because I already had everything
 $100 - 110 feet of Outdoor rated wire to go around the house
  $20 - Telephone/Cat5 cable for indicators, it was free to me
  $45 - Switch panel, capacitors, terminal strip, etc.
  $60 - 12vdc items, TV/Radio, DSL Modem, Muffin Fan. Had this stuff already

So If I bought everything new it would have cost me about $500.oo But I already had a buncha stuff and it only cost me about $315 total not including my time. About the cost of the system that ghurd was going to use to power his LED desk lamp.
http://www.fieldlines.com/story/2008/2/7/171927/1689

Links
I've discussed some of these things on here before . . .

Talking about the wire and grounding for the run that goes around the house
http://www.fieldlines.com/story/2007/9/3/22483/29925

My first RE system, 12 watt solar electric system, many parts used in my new system
http://www.fieldlines.com/story/2004/6/10/20567/9536