It was, but for a very restricted number of users. For like 2 years people hoped to get a RPi Zero at $5 and as a result didn't buy boards by the competition (OrangePi, NanoPi, etc) which were becoming really good and cheap, although not at that price, if memory serves the NanoPi Duo (first model) was around $12. That move was the reason that pushed me to abandon the RPi for other brands and never look back.