10 year Amazonian here. I think we have one of the most expensive perks of all: an active, expansive, downtown campus. That's not cheap, those towers cost billions, and there's a reason many big technology competitors are in more suburban locations (Redmond, Mountain View, Kirkland, etc ...). But it really is something to be able to get to and from work relatively quickly via public transport, to be in the middle of a cool city with great restaurants and food trucks, and to be so easily able to socialize with colleagues and friends.

But it's true that we don't have free cafeterias, free sodas, gyms (though we do have free on-campus workouts and yoga classes) and so on. We do have some other unusual perks though: our mailrooms get the "Amazon" shipping rates from USPS/DHL/FedEx, and since Amazon is one of their biggest customers, it's really really cheap to ship personal packages. We have a dog park with awesome puppies that's 17 stories up, with a crazy view of the Puget Sound and Downtown Seattle.

There's lots of less tangible things like that, but in general, people aren't here for the perks.