The listing, Teensy ++ v2.0 (SBC) has ended.
This item is a SBC, Single Board Computer, retails for $24. See pjrc.com/teensy for more details. There are other versions available, like v3.1 (without pins) and v3.2 (with pins).
A word about the photos. This auction is for a single Teensy++. The card with the details pictured comes with the Teensy++. In the first two pictures you see both sides of a single card. Each side refers to a different programming language. The third picture includes a ruler for scale.
The following comes from their web site.
The Teensy++ USB Development Board is a complete USB-based microcontoller development system. Only a standard Mini-B USB cable (sold separately) is needed to connect to a PC or Macintosh.
This version has solder pads for all I/O signals. The Teensy is also available with the header pins to plug directly into a solderless breadboard.
All Teensy boards are shipped assembled and fully tested.