Very prices are a lot cheaper than Littlewoods, just compare the two websites online. The Miele S6 Cat & Dog currently on offer from Very at £199 is "on offer" at Littlewoods for £249. The price differences are due to Littlewoods offering interest free credit terms and free delivery.
Historically, traditional mail order catalogues were always more expensive than the high street due to the credit terms offered and the 10% commision given to agents who would lend the catalogue out to their customers and collect the weekly payments. Before the internet, home shopping catalogues were very popular and offered easy credit for people who may not have been able to get credit or hire purchase from a store. I have purchased dozens of vacuum cleaners from catalogues when I was too young to get credit. Before I was 18 I was allowed to have a catalogue in my Mum's name and the twice yearly big Grattan, Kays or Freemans catalogue were a highlight of my young life. Apart from the vacuum cleaners, the catalogue had other items of interest, not always items that you could buy, if you get my meaning ;-)
I use Very a lot, mainly due to the fact I get staff discount as I used to be an assistant manager of a Littlewoods store and was allowed to keep my discount when I was made redundant after all the Littlewoods stores closed. I used to get discount from Index too before they were closed down and bought a fair few cleaners from them. Very prices are cheaper than Littlewoods because although the goods are identical, they don't offer free delivery and "interest free credit". Anything purchased from Very on credit attracts interest, unless you either pay for the items in three interest free installments or choose to delay payment for up to 12 months. As long as you pay the amount off before the buy now pay later period is over, you pay absolutely no interest, so you can get 12 months interest free credit with Very. If you don't pay by the due date though, the interest is added on from the date you received the goods and you are charged further interest on the amount until it's paid off.
So although you can get some items cheaper elsewhere, the buy now pay later terms are very attractive, providing you make sure you clear the balance before the due date.