That’s my guess, a seasonal thing like Fine Wine and Good Spirits (at least in PA) did last year or if Sells well, continue to provide shelf space. It all comes down to whether the same customers 1) like it and 2) are will to pay at the price point offered. I googled average Proseccos prices in US and found $12. I didn’t do exhaustive research so could be wrong. Anyway, at $20/bottle, the stuff better taste a lot better than the $12 options.
"A man sees in the world what he carries in his heart" ** Johann Wolfgang Von Goethe
"Never does a man portray his own character more vividly, than in his manner of portraying another" -- Richter