Generators are typically big/bulky/heavy enough that you want to buy them locally; shipping is a killer. Also make sure you get enough generator - add up the energy requirements for your refrigerator(s) and freezer(s) - especially if you have f/t feeders! - snake heat, backup home heat (you're not running a heat pump/AC off a portable generator), a small cooking appliance if you don't have a BBQ or camp stove, etc.