Burngate wrote:You haven't factored in your time.
I can do the gardening, or pay a guy to do that so I can play with my Pi. He charges me £50/hr, for cutting the grass and trimming the trees.
I used to charge £25/hr or £200/day. That's £50k a year.
At that price, the Pi is going to cost me more than my house.
Couldn't you say that about anything
? If you're setting it up to do a task, like a webserver, then the time is more or less just a one-off for setting it up, then you leave it be. Plus if it's your hobby, it's not something you'd ever want to pay someone else to do for you.