I stand corrected. https://en.wikipedia.org/wiki/F-22_Raptor. If you divide the number of aircraft built by the amount spent on the program, the GAO puts that at $412 million per plane. You can still buy more than 3 F-35's for each F-22.
That's not the marginal cost per plane, because that amortizes the cost of R&D over the current production run. If you ordered more F-22's, they would cost far less since the R&D is already done.