The "physical record index" shows the market avg price of one album (last year it was $16) and how much its equivalent is to the price of the artists' album pricing. For BigHit, and in this case Proof, has two versions, and both versions, depending on where you get them from range anywhere from $100 -$110. (Not including shipping/taxes). At the time of this screenshot, if BigHit wasn't now the monster we call HYBE, Proof would have EASILY sold 7.3M albums on Hanteo in the 2022 yearly chart.
Dynamite, no matter how history revisionists want to rewrite its impact, is the BIGGEST hit from a South Korean act ever. It brought in a shit ton of new fans into the genre and for BTS. It went on to create thousands of new jobs. It is also the reason for BTS' meteoric explosion globally. We weren't able to see its effect on fandom growth because BigHit at every turn, could not be bothered enough or were arrogant enough to think we will still fork out hundreds of dollars anyway giving bare min for more expensive AF albums.
So when I and many other ARMY say BigHit is working against BTS, this is what we mean.
Ain't no way their last "mini" concert pulled more live attendees (4.8M to be exact), which saw them more in person than their actual album sales for Proof (still hasn't cracked 4M on GAON). When everyone and their labels are pulling all stops to out gimmick each other. Make it make sense.