The News Corp websites give over plenty of screen real estate for their subscription promotions. The two pitched on he Herald Sun website are a good example. each pitched their $1 a week starter digital only promotion.
At $1 a week it’s an easy decision for plenty I suspect as it is loose change. That is how plenty of online subscriptions work, small weekly or monthly transactions you are not likely to notice and that offer incremental revenue to the supplier.
Digital gives publishers something that the physical product cannot, fractional transactions.