Now let me try this. I'll type
www.dell.com, then I click on "Notebooks" and "large business". Dell Precision M90 for £1,567. So I click on "Customize and buy". Wait a second! The price just changed to £1,991! Now this is with 1.83 GHz Core Duo. Strange enough, Core2 Duo has exactly the same price. So 2.00 GHz Core 2 Duo adds £100; that is about the same speed as 2.16 GHz Core Duo.
No 120 GB harddisk available, so I add $80 to get the 100 Gig. No DVD writer - add another £70. Screen size - either smaller than the MacBook, or larger at £80 more. Lets add £40 to the price to make them comparable. Then we subtract £120 because the Dell price includes a better graphics card.
I will insist on anti virus software for the Dell - £61 for 36 month MacAfee subscription. Bluetooth is £12. Can't find Firewire, so I'll leave it out. Total price £2319, with corrections for screen and monitor £2239. This is without shipping and VAT. VAT is 17.5%, that brings it up to £2630 without shipping. The 17 inch MacBook Pro with shipping and tax included is £1899.
Dell really charges a premium. I just don't know what they charge it for. For quality? I doubt it.