Was in my local Homebase and saw this 8ftx4ft (2440mmx1200mm) sheet of MDF reduced to clear. Spoke to a member of staff and was advised that due to a supply change a lot of timber product has been reduced. Skirtings reduced to £2 and more. Due to the nature of this offer, it is nationwide but stocks will vary between stores.
This MDF retails in other Diy retailers for around £19 a sheet. Bought what I needed, got it cut and went home after saving some cash.