A bit late, but this week I review "Summer Nights" from Riverdale One-Shot.

I think part of the problem might be the fact that there isn't much perceived value in a 20-page comic book - at least, not as much as in a Middle Grade or Young Adult novel.

Up until recently, Archie Comics had been charging $3.99 per digital issue (including back issues of current series). While I was willing to fork over $3.99 for each issue of Vixens, even I was relieved when the prices dropped. $0.99 makes each issue a much better value - pretty much on par with an episode of the show, which contains approximately twice the story and costs $1.99 to buy digitally on Amazon.
However, consider this. Buying season 1 at once brings the per-episode cost down to $1.54. Buying season 2 at once brings the per episode cost down to $0.91. Yet Archie Comics is charging $19.99 for trade paperbacks, which contain (I believe) six issues. So you can get six 20-page stories or 22 40-minute episodes for the same price. The trades are a worse value than the single issues at this point!

There's a 280-page Riverdale prequel novel coming out on December 26. It's $5.99 digitally and $9.99 in paperback form. Either way, it's a much better value than any of the comics (around 2.14 or 3.57 cents per page versus 4.95 cents per page for a comic or *shudder* 16.66 cents per page for a trade).
Also, there seems to be not much crossover appeal between the show and the comics. When I was at the Riverdale reddit, the only interest, comics-wise, was in the Riverdale comics, which are in continuity with the show but less "bonkers". The massive success of Riverdale isn't translating into interest in more comedic iterations of the characters. There really isn't that sense of fan interaction that viewers of the show have. The show is successful in large part because it was engineered for the current Internet generation. With the comics, prospective readers are expected to pay up, read a 20-page partial story (or, in the case of Riverdale, two 10-page stories), and then wait a month or two to see what happens next; that's it.
What I think might be most successful, on the publishing side, is to do novels instead of comics. Maybe have the artists do covers and a few interior illustrations, but otherwise have the writers tell the stories. It doesn't have to be strictly like the comics or the show; just write stories that today's audience would be willing to buy. Do a 100-page novella and sell it for $2.99. Let different writers work on them and keep churning them out. Set up a print-on-demand option for those that really want it. I'm guessing they'd sell better than any single issue or trade collection of the comics.

This week, I review Betty & Veronica: Vixens #7.

I just checked Amazon. Most of the back issues have dropped to $0.99. Issues #6 and even the recently-released #7 have dropped to $1.99.

A bit late, but this week I review "Betty the Vampire Slayer vs. Vampironica" from 2012.

Late, but this week I review "Bloodsport" from Riverdale #1.

Late, but this week I review Betty & Veronica: Vixens #6.

So I've been keeping track, recently, of how Riverdale stacks up against other Archie continuities (specifically, adaptations in non-comic media). I equate one minute of running time with one page of prose and also with one comic page, even though the amount of content in a comic page is probably significantly less than what can be conveyed in one page of a novel or one minute of a show.

I've found, as of last night's episode (and including all Riverdale comic issues), Riverdale has surpassed, individually:

the 1962 and 1964 pilots
the 1976 and 1978 pilots
Josie and the Pussycats (HB cartoons)
The New Archies (episodes + comics)
Archie: To Riverdale and Back Again
Riverdale High (novels, although this one's kinda debatable)
Sabrina the Teenage Witch (1996 Showtime movie)
Archie's Weird Mysteries (all episodes, all comic issues (including Archie's Mysteries), and the Jugman movie)
Josie and the Pussycats (2001 film)
Kevin (novel)
xoxo, Betty and Veronica (novels)
Betty: Diary of a Girl Next Door (novel)
Sabrina: Secrets of a Teenage Witch
New Riverdale (all issues of every series, although it might briefly regain the lead during the summer)

I'm not sure how long that the old-time radio show ran, but most episodes seem to no longer exist, so should that be counted as another win?

The loose continuity of Sabrina: The Animated Series, Sabrina in Friends Forever, and Sabrina's Secret Life will be equaled by episode 12 of season 3 of Riverdale and surpassed by episode 13. It will take longer if you factor in the issues of the corresponding Sabrina comic series.

The Filmation series is confusing. A lot of episodes seem to consist of recycled stories. There was even an iteration that consisted of nothing but repeats. Also, the majority of Archie's T.V. Funnies can be removed from competition, since it's mostly non-Archie content. So I'm not sure exactly how much content is in this "continuity", but it seems to be the next milestone for Riverdale to surpass after all of the DiC Sabrina stuff.

Obviously, the live-action Sabrina the Teenage Witch series is the most successful Archie Comics adaptation ever. Riverdale would have to last until episode 7 of season 5 in order to surpass it, and that's only if you don't count the plethora of tie-in novels.