$429?? That is the same one sold at costco for $160 except the jacking weight is a bit lower - 1.5t. Original jacking weight of the Costco jacks are 1.8t if you peal the stickers off the box however, I think Costco reduce the jacking weight for liability reasons.
It's not the same Jack, the costco is a rip-off of that one, it uses cheap aluminium, a crappy pump and the the centre parts is just plate rather than being cast. I would rather pay the extra than have the thing fail and squash my brains.
1. I'd rather get an Omega for $300 instead of that
2. If you have your head crushed from getting under a car supported by any trolley jack, it's your own fault for not having the brains to use jack stands