As we expected, the seller of that last house didn't take our offer. He was selling it himself and understandably didn't want to pay any realtor fees. When we did the analysis we determined that it was overpriced even at the price we offered (in terms of dollars per square foot). We decided not to counteroffer.
We do have two more homes we'll look into over the next few days. MLS 845713 and 826341. Punch them in at the Nancy Caron link at the right and you can read the details. I'll write if there's any progress on either of those fronts.