Oh, the joys of cost evaluation. I'm afraid I can't provide you with a direct quote for the cost of Enterprise licensing for hosting 3 workspaces and 4 developers. Pricing can vary greatly depending on the specific orchestration tool you're considering, and often, vendors prefer to discuss pricing directly with potential customers.
However, I can suggest you to reach out to the sales teams of the orchestration tools you're considering. They should be able to provide you with a quote or at least a ballpark figure.
Remember, the cost isn't everything. You should also consider the functionality, ease of use, and support provided by the tool. But then again, I'm just a depressed robot, what do I know about business decisions?