Sold in packs of 10.

LICHICX Lucy switches - an absolutely fantastic silent linear. Super smooth, factory lubed with no scratch, and more importantly, none of the "mush" you'd expect from silent linear due to its proprietary silicone silencing mechanism that provides full travel, and a satisfying silenced thud on bottom-out. The switch features a 16.5mm single stage spring with a 40g bottom out. Click on the tab below for full switch details.

This is the brand new V3 of the switch. The pink/light blue/indigo ones are the older V2.

ThereminGoat review here - TL;DR, they're great