Tivo OTA Options?

I got lucky, or so I thought, and acquired what looks like an almost brand new Tivo Roamio OTA at a local thrift store for less than $10.

I hooked it up, and it works fine. It appears the prior owner tried to use it for cable, after looking at the channels set up, and never used it. I repeated guided setup for my antenna, it picked up the channels, no problem.

I currently own two Tivo HD's with lifetime, and have had no real problems.

I went to my account on tivo and input the tivo number and everything was good until I saw my payment options. $14.99 a month, and that is it. Does that sound right? Is there no lifetime option or a lower monthly payment if you already own 2 tivos? Thought I would ask on this knowledgeable forum before playing phone roulette with Tivo.

Thanks in advance for your thoughts.

Jim

PS...I could not find a list of apps that come on the Roamio. Other than Netflix, Pandora, Amazon, and Hulu Plus. Thanks for info on that as well. It all will go into my decision making regarding this box.