Price and spec of cloud based GPU

I summarized several cloud based GPU services:

Name of services Specification Price (US$)
AWS P2 instance p2.xLarge 0.9 / hour
Azure NC6 1xK80 0.9 / hour
Lambda GPU cloud 8x AWS P2 instances 0.90 / GPU/ hour
NTU HPCC 2 units of 1-P100 is scheduled to be ready by End of October 0.78 / core/ hour