Why pay nearly £2 for a packet of ready-made popcorn when you can buy a whole pack of kernels that will make dozens of the equivalent amount for practically half that price? Homemade popcorn is also way healthier.
There are lots of other snacks and foods that are much cheaper to make yourself. This applies to granola, trail mixes, salad dressing, pasta sauces, pizza — the list goes on.
Comparison: Sainsbury's Popping Corn costs £1.10 for 500g, while a packet of Metcalfe's Skinny Topcorn Popcorn Sweet 'n Salt costs £1.60 for 80g.