How about this? It will setup a kubernetes cluster on GCP with 3 worker nodes?
https://github.com/kelseyhightower/kubernetes-the-hard-way
Some costs here but click on the google cloud calc as it seems to have gone up since he wrote this: https://github.com/kelseyhightower/kubernetes-the-hard-way/b...
You can always shut it down when not in use to lower costs of course