I use cloud GPUs sometimes when I need a lot of GPUs for a short period of time, and found it quite tricky to compare prices and features across them.
So I just created this page which shows a summary of all the main ones I know about: https://mlcontests.com/cloud-gpu.
It's a small add-on to a project I was already running which aggregates ML competitions from across multiple platforms.
Everything is open source - the file that drives it all is here: https://github.com/mlcontests/mlcontests.github.io/blob/mast....
If you spot any inaccuracies, feel free to send me PM/tweet ml_contests/submit a pull request.
I'd love to hear your feedback/suggestions!