Ink Cartridges advice please

[#1]

been shopping in Colchester Staples today.
Item 389806 160gsm  light colour printer paper  250 sheets per pack  3 pack for the price of 2  £8.05 each
item 381016 10 gsm Text & Graphics paper 250 sheets £5.94
thats a lot cheaper than your price

[#2]

Thanks for that.