Southern Tier Brewing Company is a fairly new craft brewery out of Lakewood, New York. And as far as I know, their beers can only be easily found in New York and parts of northern Pa.
They make some great beers. I especially like their IPA and Old Man Winter Ale. Both are top-notch brews, and are also very affordable.
Their products run around $6.99 for a six-pack, which is a decent price to pay for even average-quality beer.