Champagne I would say is not a luxury, it's just like any other wine, all level of price ranges from cheap to expensive. I have an excellent $16 bottle, Chandon from CA
@SW-User Also champagne is a brand name really, as much as Moët & Chandon or Veuve Clicquot or whatever...but the brand for a bit of France rather than a company. Crémant and Cava etc are all made exactly the same was as champagne, but can't be called champagne. (And at least in the EU, sparkling wine from California couldn't be called champagne either!)
SW-User
@ChampagneAngel correct, but it all comes from the same grape, just varies from where it is grown