Typically, Cremant sparkling wines start at around $12 or $13 a bottle and top out at around $30, with most clustering in the all-important $18-$25 region. Mostly they are white, but lately there's been a bit of enthusiasm for roses. All in all, though, they're uniformly excellent. Some are a little sweeter than the champagne you're used to, but some are not. They're great stand-alone wines, and they're perfect with cheese, crackers, fish, and poultry. Generally, they're some of the cheapest good wine in any local store. They're usually imported in such small batches that you'll never find the same bottle twice in, say, New York City, never mind the same bottle in both Berkeley and Boston, so there's not any point in naming exact names. But if you want to spend less this holiday season and drink well, take a gamble on the next Cremant de Whatever that you see. It's likely to be pretty great.