Small bug in both statements... true cost of Rhino (in the states) is approx $780 online. Of course, outside the US is horribly overcharged. Don't know why McNeel continues this silly policy...

Also I see little point in trying to directly compare Rhino and MoI, as now Rhino has stepped far outside the role of being just a modeler. And the features being developed for Rhino 5 will exaggerate this even further, as it seems to me that Rhino's becoming the Maya (or possibly the XSI) of the CAD world. You can't possibly compare Maya to Hexagon or Silo on a linear scale. If anything, I expect that Rhino and MoI will evolve along more complimentary paths in the future...