I just built up my (current) dream bike at Wrench Science to see how much it would cost. The bike is a 2010 De Rosa Idol frame and fork with electronic Dura Ace drivetrain, Zipp 404 wheels, Easton stem and bars, Speedplay pedals, and Fizik saddle for just under $12,000. The bike would weigh 15.87 lbs, or approximately 200 lbs less than I weigh. And, yes, it would be beautiful. Now, if only I could win the lottery without actually buying a ticket.
Or, for just a couple thousand more, you can buy this Italian work of art at R&A Cycles: