Tesco shoppers have been warned not to assume that Clubcard Prices are always cheapest.
The supermarket offers exclusive discounts of up to 50% off in stores for those who are signed up to the loyalty scheme.
Clubcard Prices are advertised by yellow stickers in store, which show the lower price for Clubcard holders.
But one Tesco customer has urged fellow shoppers not to always go straight for these discounts - as there could be cheaper products out there.
Kimberley Mallen posted on the Extreme Couponing and Bargains Facebook group to ask people to not just blindly look at the yellow Clubcard prices.
She compared two toilet rolls with one being with a Clubcard price and one without.
She pointed out they were the same price, you would be getting more for your money if you bought the product without the Clubcard price.
Both prices were the same - £8.50 - except the one without the Clubcard Price had 24 rolls in the pack compared to the other, which had 16.
This means you'd be getting more for your money by purchasing the one that isn’t part of Clubcard Prices.
She said: "Don’t let the Clubcard Prices catch you out! Andrex 16 rolls x 155 sheets = 2480 Velvet 24 rolls x 150 sheets = 3600.
“Just because it’s on the Clubcard Price doesn’t mean it works out better."
However, a Tesco spokesperson said the two different brands of toilet roll are not a like-for-like comparison.
They added: "We offer a range of branded and own brand options for our customers to choose from, at great prices.
"This Clubcard Prices offer, on Andrex Supreme Quilts toilet roll, gives Clubcard customers a saving of 18% against the normal retail price.
"We also sell cheaper branded alternatives made to different specifications, such as Velvet Classic Quilted toilet roll."
The warning comes as the cost of living crisis continues to deepen, with food inflation now at 12.6%.
Increased food costs were the biggest driver to the latest overall Consumer Price Index (CPI) inflation rate - which now stands at a new 40-year high of 10.1%.
If you’re worried about rising prices, here are five ways to cut the cost of your supermarket shop:
Check your cupboards for what you already have - then write a shopping list. This will help you avoid impulse buys and also means you’re making use of what you already have at home.
Always compare prices for the best deals. Use websites such as Trolley.co.uk and Google Shopping to help you shop around.
Swap branded products for supermarket own-brand - also known as the “Downshift” challenge - to save roughly 30%.
Sometimes the same items, including rice, sauces, and baking ingredients, can be found in multiple different supermarket aisles at different prices. Make sure you look around properly for the best deals.
Make the most of discount codes. Most supermarkets offer deals for first-time online shoppers. You can also normally find coupons in free supermarket magazines.
Never shop on an empty stomach - and always use a basket instead of a trolley if you can.
