If you want a nice champagne, go for Veuve Cliquot Brut (40€) or Rose (60€), or if you really have money to burn, go for their vintage stuff, it's magic
But Moet & Chandon is not half bad, I've had far worse! (and better!)
Or alternatively ... not wishing to sound like a low rent dipsomaniac you understand, one could get stoated on sparkling perry, have all the fun of trying to knock the neighbours' cat off the fence by firing the stoppers at it, and stick a week's worth of razors in a few of the bottles, leaving some change to spend as one sees fit. Maybe on one of Aldi's finest stuffed pheasants, or a pair of those classy pyjamas to wear to the bottle bank.
Please excuse me, the Whisky Mac season has just kicked in chez nous.