A BRN IN DENVER

We sent an initial BRN proposal for $800 in  NOUN, plus install detectors (total approx $1,000).  PERSONS NAME got quotes for the  VERB/replace/  VERB furnace air ducts (which  PERSONS NAME considers an upgrade), and part of the original $800.  PERSONS NAME showed an HVAC tech the inspection report with the pics and he said it's going to have to be completely redone. (Note from inspection report: If this gas line is truly connected through an air duct line, the  PLURAL NOUN are significant; if the gas line ,  NOUN could be sent through the ducting of  PLACE.)  COUNTRY sent over invoice for $5,000. Buyer doesn't feel  ADJECTIVE proceeding unless this gets resolved or she's credited.