They seem to have just added an option to buy "Business Class" wine, for $9.95, mirroring the "Premium" wine they used to offer pre-pandemic. It comes in a large plastic glass with a healthy pour.

Are you able to pay an upcharge to get this with a comfort fare or as an SE drink?

The FA on my last flight (a Rouge) one was very confused and insisted this wasn't a thing, so I asked her to go check with the SD. She returned and handed it to me apologetically "for free" so I didn't even have to invoke my privileges.