Pretty sure Microcenter sells the Pi Zero for $5 and the Zero W for $10. Still a good deal, and I also pick one up each time I go. Edit: oops, just checked and

Pretty sure Microcenter sells the Pi Zero for $5 and the Zero W for $10. Still a good deal, and I also pick one up each time I go. Edit: oops, just checked and the Zero W is indeed on sale for $5. I think this is a recent MC discount though, and the official price is $10, which is still reasonable. It also puts the $15/ea for 2-5 units in a better perspective.