I got about $1200 into my everyday commuter including the orginal bike from C/L. New powdercoat, full Ultegra drivetrain, wheels etc. I could have reused rack, cages, etc. off my old one and come in cheaper, but I figured "new" bike and hey, I deserved it.
Felt pretty bad for a minute or two having spent that much money on a bike, but I got over it when I started riding it.