A mouse chewed through a cord and the replacement is $144 any ideas on how to fix it

I would recommend very carefully use a knife to remove the isulation from each end of the chewed wire and very carefully strip enough insulation off the wires that you can get a heat sink on both ends of the wires to be repaired slide a piece of shrink tubing of correct size over end of one of the wire pieces making sure the piece is long enough tcover repaired area, using just enough heat carefully tin each exposed end of the wires, and after both ends are tinned add a little solder to the iron and connect both prepared ends together at this time position the heat shrink over the repaired area and using just enough heat to shrink the tubing do so.Repeat procedure on other wire if needed, install a larger piece of heat shrink tubing over both wires and shrink it being careful you do not use to high a heat. Hope This Helps Don

Any cord can be repaired with a soldering iron and some heat-shrink.