Spot instance prices have been surging recently, with Azure leading the way with a 108% increase from 2022 to 2023, followed by AWS at 21%. GCP, however, has seen a nearly 26% decrease in spot VM prices. The price increases vary across regions and instance types for each cloud provider. By being flexible and using automatic provisioning tools like CAST AI's scheduled rebalancing feature, users can navigate these changes and save significantly on their cloud spend.