What other kinds of businesses or services let you run up a bill of tens of thousands of dollars and then say, "Ok, you made a mistake, you can take it back"?
Any educated guesses on what this compute might actually cost Google?
I assume they're able to do this because the fixed costs have mostly been paid for already and the marginal cost of the electricity, system wear, and bandwidth are negligible, but I'm not sure.
It would cost them dollars. An IPhone costs < $100 to make. Obviously there's a development cost to it all. it's also easy to suggest that there's probably a feature missing atm :D