6. Waterworld – $259 million
With a $259 million budget, this is the most expensive movie ever made in the 90s, considering the inflation rate. However, this post-apocalyptic movie with the world covered in water sunk in the box office.
5. Harry Potter and the Half Blood Prince – $268 million
With a budget of $268 million, this movie grossed $934 million and is considered as the best movie in the Harry Potter franchise.