Did this yesterday.
Canon CLI-8 multipack (3 colour inks) + small photopaper. Great price. WH Smith charge £60!!! lol.
Go to store and get them to price beat tesco who sell it for £25 ish. PC World price £39.50! hence £1.50 cheaper :)
The sales assistant told me they dont price match tesco - until I showed him his website on my phone! lol.
Even if you get it from tesco its still the cheapest anywhere. Individually they cost around £9 each anyway + the paper.