i have a couple of the Hobo Fright aluminum jacks, one i bought new when it was on sale, and one i bought for 15 or 20 bucks at a swap meet.
both have worked great for me over the last 6-8-10yrs or so i have had them.
sure beats lugging the two 3 ton sears jacks, and my old hein-warner jack around.
i'm getting too old to be heaving steel jacks in my bus or a car trunk.