This week Morrisons raised no fewer than seven prices including the price of Hardy's Stamp Shiraz Cabernet Sauvignon, by 45% and Walkers crisps variety packs by 50%.
Meanwhile Somerfield kept to its promise of lowering prices by slashing the cost of five items. There was 50% off 8-packs of Danone Actimel Original and 49% off Aunt Bessie's Homestyle mashed potato.
Elsewhere Tesco cut the price of 6-packs of Kingsmill Crumpets by 50% and reduced Heinz WeightWatchers Ready Meals also by 50%. Asda provided the cheapest of our shoppers' baskets at £38.17 with Sainsbury's in second place for the second week in a row with a basket cost of £38.32.
Morrisons came third at £38.64 with Tesco the fourth-cheapest at £38.99. Somerfield came in fifth with a basket price of £45.27 and Waitrose was the most expensive at £45.97.
There was heavy promotional activity in stores, too. Sainsbury's led the way by offering deals on six items on our mystery shopper's list, including two for £3 on Lynx shower gel and two for £7 on 4-packs of Stella Artois.
Tesco was not far behind, offering our shopper deals on four items on her list. Somerfield was offering two Dolmio Bolognese Original Sauce for £2 and a bogof on Pringles.
Waitrose also joined in the promotional activity by offering two Lynx shower gels for £3.50 and two 4-packs of Stella for £7.
Asda offered 25% extra free on Aquafresh Mint Toothpaste and three tubs of own-label houmous for £2 as well as six tins of Heinz ready-to-serve tomato soup for £2.
And it would appear that the Christmas parsnip war is over, with Morrisons raising the price of a kilogramme by 40p since last week and Asda increasing it by 39p.