Just read this some place and wondered what kind of wines were available and what their prices were like in comparison to buying it on shore and taking it on yourself.

I'm sorry, I don't remember the details, but they offered several wine "packages"; so much for so many bottles of wine; I think some were pre-packaged--sort of a wine "sampler", and others you could select from a menu of reds, whites and sparkling wines. As I recall, the prices were higher than you would pay on shore, but not outrageously so. And you could buy more than you are allowed to bring aboard.