Existing coax already installed in the house. (We moved recently, but did this in both the old and new houses.)
Using it specifically for the TiVo. They all have a MOCA adapters built in.
I have looked at adding a dedicated MOCA to ethernet adapter, just to get a hardwire to one remote room, but WiFi has been working OK for the computer up there so far.
Back in MA, instead of upgrading our router, they told us it was old with the option to buy one or pay a $5 monthly fee to support the old free router. Because we were moving soon, I just paid the fee. In the new house in MD, there wasn’t an option, you had to buy the router. The MD speed is way faster though.
They messed up our install too, and ended up giving us a credit larger than the router price to make up for it.
The bridge is built into the TiVo, and the mini (at least my older one) doesn’t have WiFi. The main unit will create the MOCA network if one isn’t present and bridge to the ethernet assuming it’s hooked to both. The only thing I bought was the router, then just plugged in everything.
If there was a TV near an ethernet location, the router wouldn’t matter and the TiVos would do the MOCA on their own. But, since there isn’t, I don’t have any of them near ethernet drops.
I did run one ethernet drop in the new house, to change where the ethernet drop from the ONT was vs where I wanted the router, and my main office location. It was a straight shot and easy enough. But, adding ethernet to all the locations that already have coax would be a huge pain for no gain.