- Western Digital Elements 4TB External/Desktop Hard Drive $100
Western Digital Elements 4TB External/Desktop USB3.0 Hard Drive for $100 with free shipping.
Other stores sell it for around $120 to $135.
Kill-A-Watt Electricity Load Meter for $15 plus $2 shipping ($17).
Plug it into a power outlet, and it will meter and monitor the power usage.
People have used it to check the power consumption of their computers, electronics, clocks, coffeemakers, and other devices, to discover what to unplug or turn off to save money.