Even if you turn your computer and electronics off, they still suck power from your outlets. This is known as vampire energy and it can really add to your electric bill if you’re like us and own a lot of consumer electronics. For $100-130, this power strip from Monster lets you tap a button to switch it into sleep mode. A test was done with 200W worth of equipment. After hitting sleep, the outlets only drew a combined total of 6 watts. Impressive. The GreenPower Center might be on the expensive side for a power strip, but it could save you some serious bucks, essentially paying for itself.