Another Friday the 13th deal - this time it's from Play.com, who are selling the 2009 remake for £6.99 on DVD. And they're also selling parts 4-8 of the original series of films for £2.99 each. Granted, Zavvi sells the remake for £6.95, but you get 4% quidco with Play, versus 3% with Zavvi.
So doing the maths, that means if you have Quidco, the remake should cost you £6.71. And Parts 4-8 should cost you £2.87
EDIT: Okay, edited to show normal and quidco price.