F1 cars aren't as expensive as these. Coz selling price is different from production costs. F1 cars are not rated at selling price as there isn't a market demand. There's only costs incurred, an F1 car can be made around $500,000 USD. A Bugatti Veyron however, thou i dunno how much the production costs it needs, but certainly due to market demand, it will sell at $1,000,000 USD, hence the most expensive car. A production cost of a 50 carat diamond is relatively inexpensive, dug a hole, strike luck, walla! howwver the market demand deems it to be fucking expensive. :) cheers.