That looks like a very similar the Panther
lift I got, which came with the vise and a bar on the fixed end that widens out the footprint to make it more stable. The Pather's pricing is a little less than "yours," but yours includes free shipping. I picked mine up at the trucking company to eliminate the tailgate fee. Definately a heavy sucker.....
I just ordered the 12" side extensions for mine... hoping they'll be in this week.
One thing the Panther does not have is the tow bar to move it around. I've already planned on welding on that attachment once the dust settles a little in the garage.