Two local techies, Chris Castillo and Joe Valvo, owners of the new Laughing Buddha brewery, follow the market price of hops with rapt attention. Five bucks a pound six months ago, a spike at $50, now settling down at a relatively affordable $20. Galena and Northern Brewer they buy for the bitterness in the brown ale, a Czech variety for the lager. So far, they've been getting what they need from other breweries. The grain......