Nano USB Development Board (nanousbdev.com)

Atmel AT90USB162 Development Board

The NanoUSB Development Board is the economical solution you've been waiting.
Its small size suits perfectly with other USB devices allocated nearby.
No cables required between NanoUSBDev and other devices. It connects USB directly.
It's compatible with Teensy 1.0 Software.
Easy programming using the Atmel FLIP utility for Windows and Linux.
Features:
- Atmel AT90USB162 Development Board
- USB Re-programmable
- Compatible with Teensy 1.0 Software
- Standard USB connector. No cables required between NanoUSBDev and other devices. It connects directly.
- Very Small size. Its small size suits perfectly with others USB devices allocated nearby.

It works perfectly with PsGroove for Teensy 1.0 board.
Program it, plug in the ps3 and go.
No cable is needed as the rest of the development boards, it connects directly to ps3 usb ports.
It's as small as the more expensive devices.

Board has a side button that makes easy to re-programming it in the PC.

With European manufacturing, it has one of the most competitive prices 14'99 euros, taxes included.
Delivery to most European countries.
The store is located at nanousbdev.com

Programming files are the same as other boards compatible with teensy 1.0.

These are the files needed for Psgroove with hermes and Waninkoko Payload.

Hermes V1: megaupload.com/?d=RN073GOO
Hermes V3: megaupload.com/?d=XPVQ2A4I
V3 Waninkoko: megaupload.com/?d=90B42PGM (pakages facility allows retail)
Programming manuals found on nanousbdev.com/content/7-manual
It's as easy as plugging in the pc and use the FLIP software to upload hex files into the device.
It is certainly a good option.