I could paste lots of crap from the Seagate website but all you really need to know is that this is a 2TB internal SATA drive with 32MB cache.
The above price includes delivery by Royal Mail which takes 2-4 Days and costs £2.25+vat.
I've seen some Hitachi 2tbs for cheaper but I won't touch them after some failures. Everywhere else selling these drives seems to be at least a tenner dearer. If you vote cold please say why :)