My wife and I want to buy a Royall 6130. Does anyone know the retail price of the boiler itself? Also, the estimate we received for the installation, the unit, a modine heater for unattached garage (with underground piping), hot water heater, chimney repair (with stainless steel liner) came to $8400 total cost. Does this seem to be a fair estimate in your opinions? Since this is our first boiler, do you think a unit of this size will adequately meet our heating and hot water needs? Total square feet of house and room in garage is about 1900, but we realize the Royall will also be heating water, and we have an older farmhouse in Wisconsin. Any thoughts? Thanks!