Good quality and very easy to install, but not as nice as the illuminated door sills on other Lexus models
The sills are super easy to install, it took me around 30 minutes to do all four. They look much nicer than the standard all-plastic sills, but I must say the illuminated logo look a lot cheaper that that of most other Lexus models. My old IS 250 had illuminated door sills that lit up in a way that made the car feel much more luxurious, where as these ones light up like some kind of toy.
The reason is that the plastic in the Lexus logo is clear, which makes the illumination quite uneven. Lexus's illuminated door sills usually have matte plastic in their logos. I'll probably look into making the surface of mine matte as well in the future. It shouldn't be too hard to do by just wet sanding them with P2000 paper.
Took me 2 hours to install myself, instructions are downloadable online. Saved myself over $300 installing myself as the dealership wanted over $500 for the parts installed. They really add the finishing touch to my 2017 ct200h f sport!