Are these any good ?

[Tsaxovtr]

just looking at these ecu readers on ebay, to save my self a few quid getting it read all the time, but are they any good ?

obviously £20 is cheap,

http://cgi.ebay.co.uk/CAN-Bus-OBDII-OBD2-Trouble-Code-Reader-Scanner-U480-UK_W0QQitemZ270555704746QQcmdZViewItemQQptZUK_Diag nostic_Tools_Equipment?hash=item3efe606daa