Update cost estimates in README and remove unused deploy.zip file

Author: Dmitriy Nekrasov

03-Azure/01-03-Infrastructure/12_Azure_Copilot/Readme.md

@@ -133,10 +133,10 @@ The main cost drivers for this MicroHack are virtual machines and App Service:
 
 - **Challenge 4 (Optimization):** One Standard_D4s_v3 VM — approximately **$8/day**
 - **Challenge 5 (Resiliency):** One Standard_B2s VM — approximately **$1.50/day**
-- **Challenge 6 (Troubleshooting):** One Standard_B2s VM + Cosmos DB (Serverless) — approximately **$2/day**
+- **Challenge 6 (Troubleshooting):** One Standard_B1s VM + Cosmos DB (Serverless) — approximately **$1.50/day**
 - **Challenge 3 (Observability):** App Service B1 plan — approximately **$0.50/day**
 
-Running all resources for one day costs approximately **$12–15**. For a 2-day workshop this would be approximately **$25–30 total**.
+Running all resources for one day costs approximately **$11.50–14**. For a 2-day workshop this would be approximately **$23–28 total**.
 
 > [!TIP]
 > Delete all resources immediately after the workshop using `.\scripts\Remove-CopilotWorkshop.ps1` to minimize costs.