Well after talking to the CSR in Mumbai I'm told that, yes the $50 shipped receiver is a 622, but the $75 shipped receiver can be either a 722 or a 722k. I asked for the 722 and she said that is what she was putting on the order. We shall see what arrives in 7 to 10 business days. If it is the 722 I asked for, then the next issue will be whether it is in fact "new" or otherwise. Note, based on past experience, I'm never confident that what I set up with the CSR is what will happen and I'm less confident when I can barely understand the CSR I'm talking to. Here's hoping that this transaction will be the good exception to the rule.
BTW, even though I subscribe to Cinemax and have had paperless billing and auto-pay for a long time, the CSR said she would give me Cinemax for 1 cent for a year anyway and reduce my bill about $10 accordingly. Hope this happens also, as it will offset some of the expenditure for the DVR and the DVR fees.