That's just a foreclosure price posting. Chances are they (the lender) picked it up and transferred the ownership to another entitiy for $1.00. The $1 is a nominal amount for bookkeeping purposes at the registry of deeds. Typically bank owned properties are sold at market rates at a pre-prescribed discount to ensure a prompt sale & the lack of protections the purchase contracts afford the regular buyer.
I can go into more detail if you'd like, hope that helps,