Purchased brand new at Canadian Tire for $399 + tax:
https://www.canadiantire.ca/en/pdp/motomaster-power-inverter-3000w-includes-battery-cables-0112107p.0112107.html
$275 obo.
Brand new (never opened) MotoMaster 3000W Power Inverter converts 12V DC battery power into 120V AC power - up to 3000 total watts continuous; 6000 total watts peak (surge/startup)
Ideal for RVs, trucks, cars, boats, off-grid, cottage, camping, tailgating, jobsite, emergency backup power and anywhere else you need household electricity to power electronics, appliances, tools and equipment
Modified sine wave output form - compatible with most AC appliances (refer to appliance manufacturer to confirm compatibility)
3 x standard North American AC outlets and 2 x USB ports (2.4A each)
Detachable control panel with 20' cable and easy-to-read LCD indicates input battery voltage, output wattage and fault conditions
Features optional ignition control that turns inverter ON and OFF with vehicle ignition, preventing unnecessary battery drain
Quiet, thermo-controlled cooling fan for enhanced heat dissipation and quiet operation
Easily accessible replaceable fuses allow for safe and convenient operation
Built-in safety protections, including low/high voltage, over load and over temperature
Illuminated AC and USB ports provide visibility in low-light conditions
Integrated mounting brackets allow for permanent installation
Comes ready to install with 3' battery cables