Not true. In the Swedish Apple Store, the 17" iMac is 2% more expensive, and the low end MBP is 5% more expensive than the 15" PowerBook. The percentages of the UK store is slightly different, but the new Macs are more expensive than their predecessors.
As for a fun fact, Storbritannien (Great Britain) is misspelled on the Swedish page.
For another fun fact, Intel's codename for its next mobility CPU is Merom. (Now where's the rolleyes smiley?)