It is silly just ranting silly numbers
Yes, you do on a regular basis, JSFfan.
The real answer is that you're comparing apples with (make-believe) oranges. The F-35 URF is aspirational (no F-35s have been delivered for this price - check the LRIP numbers) and you need to understand what the URF doesn't include - try support, spares, training, weapons. Hilariously, the 2009 (IIRC) didn't include the cost of the engine!
So bravo to you for your keenness. But harness this to a bit more critical thought and you'll do much better at ADFA selection / Point Cook (do they still do trg here?) in a few years' time. Remember, this thread is full of people who've forgotten more about this and other FJ programmes than either you or I know. Sit, listen, learn.
S41