Pepsi Max cans for 20p each in Asda
£3.00 for 15 cans, works out at 20p per can. This is the cheapest I recall seeing for ages, and actually works out cheaper than the 2L bottles.
ASDA George offers free click and collect. But before you place your order, double check by entering your post code that click and collect is available at your store. Standard delivery costs £2.95.