"It cost... lots."

Depending on the knowledge level of the person asking, they come up with their own number. Those without much experience guess about $500. The more seasoned folks see the Dura-Ace logos and make up a much higher number.

I was also amused when a coworker picked up my bike to see if it was as light as I said it was. They asked if I had paid full-price for the bike, since obviously they hadn't given me the entire bike.

-- gnat! "What is this, price is right? How much bike do YOU want to pay for?"