no dear, it is all over the place.
infact, one of main reasons for restricting the number to 180 odd planes is the maintainance cost. US could have a go at them if it was just a matter of production cost only as the projects have have just to be slowed down a bit but once it is flying it still eats up lot of dollars!! the main reason is the maintaincane of RAM, you can find it easily on net. it is not in millions though for an airborne hour but surely going to cost them dearly when the we consider a complete war scenario where the plane will be required to fly multiple sorties for extended time. as for cost and time of maintainance per hour is considered the plane is reported to require some 30 hour maintainance for one airboren hour and some 45000 dollars for maintainance after just one hour of flight,
i wish this will help
High-Priced F-22 Fighter Has Major Shortcomings - washingtonpost.com
http://hatch.senate.gov/public/_files/F22AssertionsAndFacts.pdf
to add, the 45000 dollar is just the cost of normal regular maintainance and do not includes the parts that need to be replaced after a proposed number of flying hours. ffor example the canopy is to be replace after 300 hours incomparison to the fact taht it was designed to serve for 850 hours of flying!
regards!