The Carbon Fiber Chassis cost around $500K (only made by One company - Hercules).. I think Ferrari and Toyota may be making their own. Since they have a full size autoclave.
The engine is supposed to be around 200K
The gearbox is around 150K
The steering wheel is around 30K
All the carbon body pieces around 150K
The seat around 30K
4lbs of Paint and painting probably around 50K
Add it all up and you have 1.1 Million.. Most likely I underestimated the costs. because I don't include the research costs. Ferraris budget other than for paying the drivers for the whole year is around 270M Dollars.