The Raspberry Pi Foundation launched the $5 Pi Zero in late 2015, and it sold out immediately. Every time new batches of stock arrived, they were snapped up in minutes of going on sale.
The Raspberry Pi Foundation released the first Raspberry Pi Zero nearly six years ago, and it proved so popular it was sold out for months. The fact it was priced at just $5 helped. It was followed up by the wireless-enabled Zero W for $10, and today the company launches a successor to that model.