This is a very specific domain for a small niche market...you are better to cast a wide net to catch more and bigger fish...
Champagne is only grown in a certain areas...there are lots of sparking wines but few true champagnes. Wine drinkers are going to search for the brand of champagne that they want to purchase...vineyards have specific brandable names...I can't think of wht want this? Or what it would be used for
Recent champagne names have sold for around $200...imo...this is most likely worth $0...if you get lucky low $$$.