They're pretty expensive too especially considering the warranty is pretty short. From their warranty[0]:

> [...] this device will be free from defects in material and workmanship and will operate for 2 years and 3 years for Energy Star certified products, unless a different period is stated in or on the packaging of the product, based on up to 3 hours average working time per day/7 days per week, when used as directed

I don't really know anyone who only uses lights three hours a day, especially when it gets dark pretty early during winter.

[0] https://www.philips-hue.com/en-us/support/legal/warranty