In two recent submissions, after acceptance the journal contacted me to see if I was interested in submitting an image for consideration as back cover, inside back cover, or inside front cover. The cover image would need to be produced by our side, but then we additionally would have to pay the journal a fee (~$1000) for the "cost of producing the cover."
While I know front covers are generally seen as a mark of prestige (at least in my field, physics/engineering), are these additional "cover-lite" opportunities worth the cost in increased citations, views, prestige, or other intangibles?
I should stress that the journals are established and well-regarded (i.e. not predatory journals). One is explicitly a for-profit owned by Wiley, the other is a society journal.