I have given people more than they've asked for a couple of times (usually if they've asked for something that I know to be under market rate and I don't want them jumping ship in a year). But yeah... as a hiring manager I want to know what your expectation is because that's what I'm going to take into consideration when I compare you against other people I've interviewed.

i.e. Dev A has everything but costs 20% more than Dev B, who I think can pick up everything we need within a year's time. Or, Dev C has claimed to have done all of these different things, but is asking for an amount that is suspiciously low.