I bought this Pack installed 4 sept 2010 to 24.52 ie over 2 euros increase in 5 months I think it is exaggerated, I had placed an order with 2 cartridges CLI 521-8 80 room and 1 cartridge black PGI520 BK 9.20 is a price for the entire 51.32 which would by doing the same order today 60.03 an overall increase of 9.30 suggests that it pushes us to buy generic