I've followed this report in the forum- the discussion is becoming enlightening in explaining HD operation and Eugene seems to know his stuff (wonders if Tex knows him). Unless I'm mistaken,
This thread is worth going through if you are unclear about the qualitative performance differences between drive types and capabilities. (Shorty & Spinner may be well aware of the UK pricing too

)
And in case you were wondering-
It's being sold at Newegg now