I have found that the black Craftsman jacks are good (professional line). I had a 7,000# floor jack for years, and would still have it if an errant employee hadn't tried to jack up a loaded semi with it
. I have a Craftsman professional bottle jack I use to jack up our Airstream, the first one failed after 3 years, but only 3 uses. Turned out the cylinder had corroded and chewed up the seal. My fault, I had left it in a damp location with it slightly extended. They replaced it with no hassles.
Bottom line, even if you decide you never in your life want to use the jack, take it in to Sears, and try to exchange it. If they do, take it home, and sell it to someone. Then take the proceeeds and buy a jack that you want.