Try quidco, they offer similar deals. But I noticed recently if you get a nectar card you can buy pretty much anything ojnline using their site links and you get points for free stuff.
Tried quidco and they ‘lost’ a lot of my links and so couldn’t pay out. I did all my Christmas shopping through theirs and felt like I’d been ripped off (even though I was buying the stuff anyway).
So far though all the cash back through these has gone through.