The Hedstrom Wavy Slide is just £33.42 at Amazon right now, reduced from £69.99.
That's an epic saving of more than £36. Suitable for children aged three years old and above, this slide measures 1.9 metres high. The item description says it can be used by children up to ten years of age, but it looks to me as if it's better suited to younger children - I reckon my almost-ten-year-old's legs would almost reach the end of this slide if had a go on it!
It looks like a sturdy buy though, thanks to the high grade injection-moulded plastic and the additional steel support for extra stability. The 2-rung ladder has water porous treads too, so there's less chance of slipping even during rainy day play.
Customers have rated this 3.8 out of a possible 5 stars, and the reviews are a bit mixed. The main bone of contention seems to be that it's tricky to set up, but others say that's not the case, so if you're a dab hand at this sort of thing, you'll probably fare just fine with it.
This slide also comes with a 1 year warranty, and as ever when you spend more than £10 at Amazon, delivery will be free.