$80 per year or $8/month for Channels DVR after one-month free trial (that delivers guide data and all DVR functionality and support)
Other costs are at your discretion:
- Storage size for the DVR- basically whatever amount of hard drive storage you want to allocate.
- An AppleTV or other compatible streaming box/stick on any TVs where you want this access. For example, you could use an AppleTV on one TV and a cheap Amazon fire sticks on others. I just opt to have AppleTVs on all TVs but firesticks are certainly a much cheaper option for Channels streaming.
- A computer or NAS to host the DVR. Apparently you can use an old Mac for this or that rasberry pi. I use a Synology NAS. Others use Drobo, qnap, readynas, Nvidia shield, freenas, old PC, old Mac, and various other hardware. Channels DVR runs on LOTS of stuff. Many likely use an old, retired computing device of some type unless they have or choose to buy a dedicated NAS.
- HDHomeRun device for over-the-air signals from antenna and/or HDHomeRun Prime for cable signals from Xfinity.
- If you do want to keep something from Xfinity cable via HDHomeRun Prime, they will probably charge you something for the cablecard though some say they got theirs for free. Obviously, there would be the charge for Xfinity cable service too. But if you are fully dumping cable, none of that will apply.
- If you are able to get free TV over the air- check a site like antennaweb.org - and you do not already have an antenna, that could cost up to a few hundred to buy, mount, ground & cable.
- If you subscribe to any other streaming service to fill any programming gap you can't get through channels. For example, if you subscribe to Netflix or Discovery+ or Disney+, those would obviously be extra (separate) charges that have nothing to do with Channels.
Based on the discussion so far, you seem to have everything already, so I THNK the only new cost to you would be that $8/month or $80/yr fee for the DVR service with guide data. Long ago, I think I recall TIVO charging $12/month (per unit?) so I consider the $80/yr option quite the bargain.
If you have a LOT of TV watchers in your home, you might find you need
another HDHomeRun box for more TV tuners (so that- say- 5 or 6 people could all be watching something
different at the
same time). Generally, those are 2 or 4-tuner boxes, so if you think you need- say- 8 tuners for 5 people to watch something different at the same time AND 3 more things being recorded while they do, that's probably TWO HDHomeRun boxes with 4 tuners each.
If you like to store a TON of stuff on a DVR for up to forever, you might need to add another hard drive at some point but even a relatively cheap & small 2-4TB HDD will hold a LOT of DVR content. It would take a whole lot of long-term/no deleting anything DVR'ing to fill up 6-10TB. I think I recall TIVO/DISH/DirecTV boxes having 1TB drives was perceived to be overkill storage for whole families.
Since you live in an Xfinity area, you are subject to Xfinity data caps. So if you stream a lot of programming through other apps and there are several people living there, you could theoretically exceed the cap and have to pay more for broadband service. I neither hear about, nor see that happening much in forums, etc but it is possible. I THINK Xfinity is 1.2TB/month nationwide and that would be a LOT of video to stream in only a month.
Of course, any over-the-air programming doesn't count against that at all, so if you use an antenna for the "big 5" networks (ABC, NBC, CBS, Fox, CW) and potentially watch programming on their (usually many) sub-channels, none of that is using broadband data at all.
That's all I can think of. I hope this is helpful.