Switched from Azure Key Vault to HashiCorp Vault - pricing shock after 6 months

I'm a PM at a small SaaS company, and we recently moved from Azure Key Vault to HashiCorp Vault to support our multi-cloud setup. The initial setup was great, and the features are solid.

But we just got our first renewal quote, and I'm honestly shocked. The cost is way beyond what we were expecting based on the initial estimates. The jump from a straightforward Azure service to HashiCorp's licensing model feels huge. Did anyone else experience this sticker shock after the first 6-12 months? How do you manage the costs? I'm starting to wonder if we should have stuck with cloud-native tools, even if it meant a slightly less unified workflow.