Bargain hunters have discovered a way to get an M&S £25 gift box designed for at-home pampering for a fraction of the usual price due to a clever deal stack. As the nights draw in, it's an ideal time for some self-care, and the gloomy weather can make everyone feel in need of a bit of a pick-me-up.

Marks and Spencer has introduced a Pamper Night In letterbox gift, filled with treats for a spa-like experience at home. The box typically costs £25, including UK-wide delivery, but is currently 25% off, reducing the price to £18.75. However, savvy shoppers have found a way to get it even cheaper, thanks to a money-saving website.

TopCashback offers a free £15 bonus to all new members when they sign up and then a percentage back on all qualifying purchases from thousands of retailers, including M&S. This means that new Top Cashback members shopping at Marks and Spencer can effectively get the Pamper Night In Letterbox Gift for £3.59 once cashback has been paid - a massive 85% off the original price, reports Wales Online.

The box includes spa-inspired beauty goodies and a decadent sweet treat perfect for a post-pamper snack. The complete set includes an eye mask, a 150ml bottle of Calm body wash, 75ml Restore hand cream, a 30g tube of Calm bath salts, a bunch of dried lavender, and 100g of 70% dark chocolate dusted almonds.

Currently on offer with a 25% discount in M&S' ongoing hamper sale, the Pamper Night Letterbox gift boasts an average rating of 4.8 stars out of 5.

Customers commend it for being a reasonably priced gift suitable for a variety of occasions, with reviewers sending it as everything from a birthday treat, to get well soon and 'just because' gifts.

Reviewers also praised it for the ease of delivery thanks to its compact packaging. One five-star reviewer who particularly loved the letterbox packaging added: "This was a birthday present. It was very well received. Better idea than flowers and chocolates in my opinion."

Another shopper described the box as "superb and a great gift idea," adding: "Sent to a friend the day before a major operation. She loved it and thought it was a great idea, used it also during her hospital stay. Felt like a spa treatment she said, amazing gift."

A third shopper said she'd ended up gifting the boxes having been sent one herself, explaining: "I received one of these as a surprise gift and loved it so much I decided to gift it to two other people too - share the love!"

However, with M&S renowned for their letterbox gifts, including their bestselling afternoon tea in a box and options devoted to Colin the Caterpillar and Percy Pig, some shoppers were less impressed with the mini-spa option. One shopper said: "This was sparse compared to other M&S hampers at similar prices. Wouldn't buy again."