Sprinklers come in all shapes and styles; you don’t need to spend $159 on a giant 8’ long inflatable brontosaurus that spritzes water out of its mouth, but it is a stunning piece that will be the talk of the neighborhood and the subject of lots of pretend play.
The Ginormous Inflatable Unicorn Sprinkler ($44.99) stands six feet tall and blows water from its horn. It is more in keeping with my idea of what a high-end inflatable toy ought to reasonably cost, but I am sure there are those people who think that anything more than a $20 lawn sprinkler is outrageous.
My advice with any expensive inflatable: buy it when you will be able to test it for leaks right away, so you can return it if there is a problem.
Two things to keep in mind, neither of these blow-up toys come with their own pump, and you're going to want one get them properly inflated without passing out from hyperventilation. Next, neither of these are meant as ride-on toys. They are essentially balloons that will pop if over inflated, punctured or otherwise used in a manner other than as intended.