Deploy to Azure with Marketplace

I am planning to use the new UiPath Orchestrator from Azure Marketplace. I want to know how big of an advantage I will be getting from cost and maintenance point of view when compared to on prem or Iaas implementation. Below are few questions that I have and any information on this will really help me out:

  1. What are the month on month costs that can incur on average for the orchestrator usage?
  2. How many concurrent bots can be run on a single node instance?
  3. What are the options available for me to scale up to a multi node setup?
  4. Any other additional overhead costs that need to keep in mind?
  5. How is the stability of this instance and any known issues that I need to be aware off?

I am also interested on the subject.