If you've been eyeing the Sony Z Ultra Google Play edition but couldn't stomach the price, have a look here. T'was $649, now available for $449. Plus free ground shipping, so there's that. Basically this extra-large smartphone — again, it's pretty damned huge at 6.4 inches — has gone from oversized and overpriced to merely "Damn, that's big."
Still, you're going to have to ask yourself why you wouldn't just save another $150 and pick up a Nexus 7 and make calls some other way.