Cleaning
I don't think Louis' fears are entirely justified, as the copy states:
"Easy Cleanup
The pitcher, lid, ingredient cap and funnel can all go right into the dishwasher for easy cleaning. For best results, though, we recommend rinsing lightly first, to remove any residue, seeds or fiber beneath the blades."
From that it appears that all ingredients added to the blender go through a funnel that can be removed and dishwashed.
As stated, the advantage is no need for seals. But the drawback may be that the blades are integral with the jar. When the blades get dull, you'll perhaps need a new jar-blade assembly.
But yeah, $600 for a blender? I get by just fine with my Oster beehive.