Amazon, and any other major company, has created a salary range for any role. As someone who has hired for many of these companies, I can tell you: Sharing your compensation is taboo, but do it anyway. So long as you do it honestly and completely. Talking about only salary in a company that rewards heavily in stock is not useful.

There is negotiation room. However, playing the game of show me your hand first is just plain annoying. Why should a company pay you more than is standard in your role? Are you leaving bonus/stock money on the table to come there? Relocating? Losing money on a lease? Tuition? Costs covered by your current employer or another offer (ie housing, transportation, childcare, etc)?

It's a myth that all companies are out to lowball you. The more successful a company is, the more likely it is that they've realized internal equity is at least as (if not more so) important than being competitive in the market.

Go see twitter #talkpay. A lot of great data points were shared there.