Cheapest price listed on 3Camels for Amazon is £275 on 27th Dec 2015.
Cheapest current price elsewhere is: £375 at Jessops with free LaCie Mini 1TB Hard Drive & Permajet Paper (according to Jessops worth a total of £142.98).
Or Amazon £361.96.
This is a dye printer (rather than pigment like the pro 10s and pro 1).
A full genuine set of 8 cartridges is currently £78.17 on Amazon.
Canon lists the following as estimated number of pages per ink cart for printing full size A3+:
Black: 62 photos
Grey: 66 photos
Light Grey: 142 photos
Cyan: 53 photos
Magenta: 49 photos
Yellow: 52 photos
Photo Cyan: 59 photos
Photo Magenta: 38 photos
Keep in mind this is a big heavy printer. Dimensions are 689 x 385 x 215 mm
Weight 19.7 kg.