APC is long considered a leader in standby power supplies for computers and related hardware. Much caution must be exercised when purchasing an APC from a listing or store; otherwise you could end up paying double! An example is a listing in the eBay store of an unnamed seller listing a APC BACK-UPS ES 8 OUTLET 350VA 120V for $73.16 plus $21.62 shipping, total $94.78. This very same item is available direct from APC for $39.99 plus $7.00 shipping, total $46.99 a difference of $47.79 or more than double what the item is direct from APC! Research, study, do your homework or you WILL pay too much! I hope you enjoy your eBay experiences while you watch your pennies.