DS1 got it for his third birthday. He was over the moon. used it for a year and a half. From the age of 5 he would just pretend the top bit was a pirate ship, and he hardly ever used it. By 1years of age, DS1 loved it. We sold it on ebay after Christmas (due to housemove, as I am sure ds2 would loved it still)
we've just added the ELC £15 water-slide to our TP climbing frame and by god it's made my life a lot easier! That said, an 11 year old had a job sqeezing his bottom down the slide. So i guess it has a limited future.