https://www.techradar.com/news/eufy-robovac-11-is-dollar90-off-at-amazon-right-now

Amazon Prime Day is a great time to save on household tech, as evidenced by this Eufy RoboVac 11 deal. 

The robot vacuum is currently $159.99 at Amazon, down $90 (36%) from its regular retail price of $249.99.