TiVo Roamio OTA question

I'm exploring my options to "cut the cord" and have found out about the Roamio.



I currently have an Apple TV, Roku 2, and newly acquired Amazon Fire TV. This still leaves out a few things out. I do have a PlayOn subscription that will help.



I have found some conflicting information about the TiVo Roamio OTA. According to BestBuy:



Built-in 10/100 Mbps Ethernet LAN

Provides a wired connection to your home network.



&



Supports up to 11 networked boxes

With 3 live high-definition streams for versatile use. Connects to TiVo® Minis and other TiVo® DVRs for multiroom streaming.



But, I have also read that to connect say 2 Roamio OTA's I would need a MoCA at each one. At $50 per MoCA, and $50 per Roamio (BB Price) that's getting up there to try to cut the cord. I realize there will be a ROI period, but, before I make the commitment to buy, I want to be sure of what I am getting.



The 2nd question: Is there a charge for a 2nd box with TiVo Service?



Thanks in advance.