The original selling price of the Apple I computer associated with Steve Jobs was $666.66.
Steve Jobs and Steve Wozniak designed and built the Apple I in 1976, with Jobs focusing heavily on business arrangements and sales. The machine was sold as a single assembled circuit board rather than a complete consumer computer. Buyers generally had to provide a case, keyboard, display, and power supply themselves.
The unusual price came from a markup over the wholesale cost paid by the Byte Shop, one of the earliest retailers to carry the computer. The repeating digits made the price memorable, but it was a straightforward commercial price rather than a coded reference.
The Apple I was followed by the much more successful Apple II. Unlike the Apple I, the Apple II was designed as a ready-to-use personal computer with a keyboard and plastic case, helping Apple reach a wider market.