Because of the ongoing delays of the original PSJailbreak device, and the original high-price, and with the public release of PSGroove, the Chinese cloners have seized the hole left and have been flooding the market to fill the demand of the PS3 owners wanting to be able to jailbreak their PS3 consoles, at a low price, with their PS3BREAK devices, which have also being sold under the names of ""AmazeBREAK"", and ""USB-Break"", such as this ps3breakr4.com/ps3-break-v-12-power-switch-p-3.html
BUT Buyer beware, the reason why the price has been dropping so fast on these PS3BREAK devices, is with the world-wide shortage of ATMEL chips, there is very few of the original devices which can be easy updated using your PC, when new versions of PSGroove or others have been released.
As the stock has been arriving in the hands of the end-user now, it been found out there is TWO types of these BREAK devices, ones with the original ATMEL design that CAN BE UPGRADED with no problems, with just a push of the button, and installing the FLIP software!
AND another newer cheaper design using the PIC micro-controller, and it seems these cheaper ones have NOT been flashed with a boot-loader, which means they are NOT UPGRADEABLE making the end-user stuck in having to buy more hardware and do some soldering if he wishes to update the device.
But the site I mentioned above is quite trustful, since my friend has bought one and it uses the original ATMEL.