A robot vacuum cleaner with a question about the best time to buy it.

The video starts with a shot of a robot vacuum cleaner and a question about the best time to buy it. It then shows a series of price points for the vacuum, illustrating price fluctuations. The ad transitions to a smartphone screen displaying the Idealo app, followed by a search bar and app store download buttons. The final scene shows the Idealo logo and website address, emphasizing price comparison.