I am kind of shocked at how poorly Amazon pays new grads on top of unfavorable vesting schedules. There is a reason most of my friends left it in < 2 years for better work and pay.
I hope you are paid what you wanted to be paid. On average my experience has been that Amazon's offers are lesser than Google and Facebook's. Not to mention no free food which would be okay if Amazon paid more but that is not the case.
That's the direct implication, however. Unless you claim offers are decoupled from the labor market's value of an individual, which is certainly a novel idea I'd be interested in hearing about.