Generally, the installation cost depends on the type of insulation product and the coverage area. However, if there are some wall repairs involved, you may have to shell out extra.
A complete wall insulation installation would cost anything between $2850 and $7000 for the entire house.
At Just Rite Store, our Bradford Insulation Batts Gold Wall (R1.5) installation cost hovers around A$34.19 if you are in the ACT region. In an otherwise case, we recommend you find a local installer to get a project estimate.