Freaking expensive. Forget it.
So Every country doing mining except for australia ?
Even with the cheapest off peak electricity domestic rates you're only barely breaking even with what you mine. The only way to make it affordable is to use the excess heat to warm your house which then ends up being profitable; modern mining hardware is extremely loud though so you probably wouldn't tolerate them in your house anyway. Unless you can get commercial rates for electricity, or produce your own through solar, wind etc., it is basically futile (having mined on and off in Australia for 6 years now.) The only other way is to mine at a loss and hope bitcoin keeps rising to offset your earlier losses, in which case it makes more sense to just convert dollars into bitcoin now and HODL.