If you are a new customer, then D* is cheaper to buy into an HR34 with 3 receivers than a 2 Hopper+2 Joey system. You will pay a little more in subscription fees, but it isn't a great amount.
But if you are an existing customer of D*, then the HR34 costs from free to $500 depending upon a lot of factors, no small one the Magic 8 Ball. Similar to what we are seeing with the E* upgrades to Hopper/Joey situation.
I think, but do not know, that some of the resistance from E* for a 2 Hopper and no Joeys, or some combo of less Joeys than Hoppers could very well be product availability constraints. But for new customers, one easy way to get that is to go through a retailer instead of E* directly. Costs are the same and it has been reported successful for many.
While I would normally not want a Hopper + 3 Joey setup, I can see where it could be more than good enough. And that is where the additional units are really not being used all that much. Like a bedroom TV for instance, or a kid's room where they watch incessantly the same Sponge Bob or whatever. Just noise, color and movement being good enough oft times.