If you "do it yourself" what would the net profit be including the cost of hardware and electricity?
And likewise if you assume values for the cost of apple seeds land, see how many apples you can grow given a certain amount of time - and the value of apples could very well go down - but for the sake of demonstration you can also calculate a very rough estimate of apple orchard profitability, no?
Assume a perfectly spherical cow, emitting milk equally in all directions...
Unless you have free/ very cheap power, is likely not worth your time.