The Pi Zero was cheap because Broadcom was inventory clearing and sold the Foundation the SoCs (which they'd stopped making) at a bargain-basement price.
So it's the first one, then. Even by using the shitbags at Sony (who I really don't want to give my money to, which is what happens when you buy a Pi they manufactured) they still couldn't get enough production to meet demand? Or couldn't fill the channel fast enough? Either way, I'm underwhelmed by their performance. The Pi Zero has been useful primarily as a marketing exercise. Meanwhile, I have to wonder what percentage of them are just sitting in a drawer somewhere. I'm sure it's considerable, just like the prior model. They put out a lot of buzz about it, then people buy them, then only a percentage of them get used and a percentage of the people who want to do something with them get shafted.
Well, fuck them. I'll buy Beaglebones, CHIPs, Pines and other devices which I can actually get my hands on.