I bought this hard drive to use in my mp3 player but then found it wasn't compatible so it ihas only been used to test that it works (and it does!)
It's got a Toshiba 30GB 1.8" hard drive inside and doesn't need an external power supply. In Windows XP (don't know about other systems) you can just plug it in and it will be recognised, it doesn't need any drivers.
Size is 6x10x1cm. To give you an idea, here it is in my hand:http://lh3.ggpht.com/nick.a.aronson/SEokFD2UFnI/AAAAAAAABI0/zuhPG4pgzsE/hd%20005.jpg?imgmax=800
PS: My ebay username is nick_aronson - 281 ratings, all positive :)
Price reduced to £25.
Payment instructions: bank transfer prefferred, but would also accept cheque or Paypal