The Knitting Network are balls of Ella Rae Cozy Soft Chunky for £2.29 each for 24 hours as part of their Black Friday deals. The yarn is a blend of wool and acrylic with 120 meters in each 100g ball. There are also knitting patterns available as PDFs for for £1 each.
You can find all their sale yarns here.
This page includes affiliate links, if you follow them to shop it wont cost you any more but I may receive a small commission which goes towards the running costs of Pollyknitter.