That trap is suitable for display under glass at the local art museum. In my humble opinion, I would never spend that on kitchen trap. If the sink happend to be in an open cabinet where that beautiful high chrome polish over solid cast brass, and those stylish nuts, could be appreciated...well I still wouldn't , unless the customer was just dying to spend $125 bucks, instead of $17.95 for his trap. Most folks will get a $4.95 PVC version.
Other than the high end styling and material, there is nothing "different" about that item.