Yup! My Euro 4 Doblo 1250 is £125 on a 56 plate Nov 06 model. Two months later and it would be loads more. That's because you've now got Euro 5 for cheapy cheaps and Euro 4 isn't the best emissions standard after Jan 1 2007.
My May 2001 Pug Estate (110bhp 2 litre diesel) is £125; but if I had had a Feb 2001 2 litre 90hp diesel it would be £185!
Luck of the draw for me - I didn't plan any of it.