I totally agree, go to E-bay and look up the G4 base and take a look, there are many to choose from, just ordered 10 of the G4 5730 6 chip 250 lumen bulbs for a buddy and they were $18.96 for all ten. Hard to beat those prices. Just make sure you get the good ones, canbus are the best.
On another note Bad Bolt wanted some pictures of my solar system so here they are. As far as the batteries go the wiring looks like a mess but they work great and I know where all the wires go! lol. As far as wiring the solar system it isn't hard at all, 2 leads come from your solar panels, they go into the charge controller, 2 wires come out of the charge controller to your batteries. The fun starts when you run the wiring, finding a good route to install then can be a challenge. I wouldn't be without a solar system, just have to figure out the best spot to add 2 more batteries for a total of 6! Then I'll have more power, woo - woo - woo!!