Speaking of magazine circulation, do we have any idea how many people read the magazine digitally? Or is that factored into the overall circulation numbers?
no & no ( at least in riaj I'm sure the circ number are physical only not 100% with shueisha reports, but should not be included since the last time it was included was SQ fro 2018 and they explicitly mentioned including digital )
btw circ is just a part of the equation, we also need to take into account return rate, WSJ peaked in 1994 with 2% (AFAWK) adn the last known reported return rate was was in 2012 (~10%)
should be lower nowadays.. according to AJPEA, return rate of weekly magazines (as a whole so all weekly magazines, not just manga) are 42.3% for 2019 (manga magazines might be higher but we have no real way to tell)
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for digital ratio, we have never really got a ratio for any specific magazines, but looking at the japanese publishing industry as a whole (again according to AJPEA), digital magazines make up a whopping.... 0.8% of the entire market. (6 B yen out of 794.5 B yen ; 2020 first half) or 3.4% of the digital market (60 B yen out of 176.2 B yen)
as for manga magazines, in 2018 (last time number was reported by AJPEA) digital magazines took up a massive... 4% of the total manga magazines sales (in term of yen)
keep in mind that number is as a whole, not for any specific magazines, so we need to take into consideration of physical only magazine (also, by that logic, digital only magazines also exists by the way) also some might disagree on the some parts of the methodology used, butI i considered the good enough
those are the (reported) numbers. make of that what you will
everything is here
https://www.ajpea.or.jp/ you can find them yourself. (tbf, some are via news site but those are easy enough if you know the headline.)
