Glojo, i think you're right - not only is the absolute cost astronomical, but the relative cost is astonishing.
a single F-35B is going to buy you 130+ brand-spanking new Tommahawk Land Attack Missiles, and 30 F-35B's are going to buy, what, 45 - 50 top of the range F/A-18E SuperHornets with full weapons integration and immediate service.
its difficult to justify F-35 when a) its unlikely to be a mature airframe/weapon for another 12-15 years, b) the 'christ!' price tag covers a relatively small part of what most airforces are buying it for - which is everything, c) there are already doubts about its ability to do the first day of war task given the ever increasing capabilities of radar systems, and d) the observation that it would be far cheaper to 'stealthify' an air launched cruise missile and fire it from an F/A-18/Typhoon/Rafale to lop off the AD network that it would be to build a LO aircraft, fly it right into the LO network and drop Paveways onto it.