At £250 per day in the studio?
£600 for 500 pressings?

What's wrong with that?
4-8 days in the studio, mixing and mastering time, glass master, graphics (somebody's got to do it, takes time and it's a skilled job to get it in the format the pressing plant wants). Maybe a well rehearsed solo artist can record an album in a day but that's exceptional.
It's in the ballpark. The figures don't matter, it's the decreasing cost with increasing sales volumes that's the point, and the reason why the music industry likes to promote a few million-selling superstars instead of thousands of lesser artists, and why folk CD's are more expensive (phew! nearly back on topic again).

Anahata