Amazing deal. Cheapest I can find these Canon compatible cartridges on the web is about £10 each and Canon originals are £13 on Amazon. I thought they were a decent price at £9.97 each at ASDA so went to buy a couple and they came out as 2 for £8. So I bought 4 for £16, and then the last four in my local ASDA (Norwich) for another £16. Amazing deal and I think this is nationwide. ASDA seems to have included these expensive cartridges along with much cheaper cartridges in its 2 for £8 promotion.
Also cartridges have 26ml ink which is better than the originals.
There might be a deal for the PG-41 colour cartridges but there were none in my local store.