Why is Amazon P2 instance cost much more than G3?
p2.16xlarge has 16 Tesla K80 GPUs
g3.16xlarge has 4 Tesla M60 GPUs
p3.16xlarge has 8 Tesla V100 GPUs.


I believe the number is a reference to the vCPUs (they all have 64).  Comparing the 1 GPU instance of each type, p3 is the most expensive, then g3, then p2, as expected.