100% grass-fed beef and pastured pork are hard to find and expensive in New England. I suppose that's not surprising, given that even the farmers who pasture their animals usually supplement with grain during winter.
Mail order may be the answer. I've found Slanker's in TX (www.slankersgrassfedmeats.com), and they seem to get good reviews. Does anyone order from another farm that'll ship out-of-state?