Costs of Modern Fighters
This is taken from a report at Defense-Aerospace (pdf file):
F-15E: 108.2
F-18E: 95.3
JSF: 112.5
Gripen: 76.07
Rafale C: 135.8
Typhoon: 143.8
F-22: 338.8
Seems the F-18E comes out as the best buy for your money, at least in my opinion.