I buy tesco 200 gm classic rich roast coffee at £1.30 ish . I hate some cheap coffees but this one is drinkable , plus the jars hold 1lb of dried beans , peas ,oats , barley , wheat etc etc . So they make it really easy to know how much of anything you have in store at anytime , and if any goes off , you only lose 1lb instead of a huge amount .
Also , tesco salad cream 570gm . The jar is perfect for me to use for piccalilli , branston , chutney , pickled onions , relishes etc etc . I bought 10 jars ages ago , for 5p a jar , as they were just about out of date . I gave my family a jar each and asked that they gave me the empty back . So I got my jar for 50p ...and then another 9 empty jars . It is even cheaper to buy deals like that and throw away the contents ...you can't buy the jars cheaper anywhere, unless you by thousands at a time .
I also keep the Apple cider vinegar bottles , as they make perfect bottles for cooking oil , and the small amounts of hemp and sunflower oil I grow .
cheers
Russ