Yes, I do know the differnt curves. Not everyone builds $2 radios or cheap consumer trinkets. The ones that don't need real parts instead of the floor sweepings.
Its been almost four years, but I believe they were under a nickle each because I got them by the hundred from the stock room and I only did that on 5 cent and under parts. We used a lot of precision parts including .1% resistors. The radios were $8,000 each and custom built.
We used a lot of microwave ceramic SMD chips that had to be high precision to reduce test and alignment time.
Take a look at: