Sometimes, there can be a delay in init script execution. But based on the screenshot, there are no init script logs and also as you have mentioned, there are only 2 libraries to be installed on the cluster. So this should not take much time to install.

Also the number of nodes are also less (1 driver and 1 worker), so this might be an issue with the Cloud Provider where the delay is happening while the VM is created and attached to the cluster. If its a VNET injected workspace and if you are using custom DNS servers, you can check the DNS logs to know if there is any delay happening.

Regarding the cost for the cluster, as per my understanding, the DBU will be calculated only after the cluster is up and running. So until the cluster is started, the cost will not be calculated.