Only if you can more than double your sales.
As stated elsewhere, DC/Marvel using newsprint will not lower their production cost by that much or even at all depending on their high volume contracts with their printers. At most, they could save maybe about 15 cents per issue.
Their costs in terms of creators still stay the same. Most estimates put the costs at around $10,000 to $15,000 for a 20 to 24 page comic.
Marvel and DC only get a portion of cover price from Diamond. Most estimates are from 40-55%. That give them about 2.00 per comic off a $3.99 cover price. So for a comic that sells around 30,000, that gives them about $60,000.
At $1.99, they would only make about $1.00 per issue. So they would only make $30,000.00 from sales
So let’s say the print cost on the current paper is 0.30 so $9000 for 30,000.
This give them this breakdown:
10-15k creators
9k print
1k misc
=20-35k costs
60k from sales
=40-25k profit
Now with the hypothetical newsprint lower cost of 0.15, it costs $4500 for 30,000.
This gives a breakdown:
10-15k creators
4.5k print
1k misc
=15.5-20.5k costs
30k income
=14.5-10k profit
Unless DC/Marvel can find a way to slash their production cost more than switching paper and/or more than double their sales from lower cover price, they’d be losing money.
Sources:
https://fairpagerates.com/
http://www.printninja.com/printing-p...-book-printing
https://www.cbr.com/is-diamond-comics-the-devil/