Why buying essentials from a supermarket convenience store could cost you 63% more – including a £1 mark up on sausages

CONVENIENCE can be costly – especially when shopping for that much-loved barbecue.

Picking up last minute essentials like burgers, lager, firelighters and sun cream from the top supermarkets’ smaller stores can cost you a whopping 60 per cent extra or more, compared with shopping at a superstore.

Glen MinikinWriter Alex Lloyd with her two Tesco shopping hauls. The Tesco Express basket on the left cost £13.93 more than the Tesco Extra one on the right[/caption] Glen MinikinBy...