We have hundreds of thousands of parts in stock ready to go on The Grid. It's actually way more integrated than JLC.
To take a particular example, they claim to have 11065 SKUs of microcontrollers in stock https://jlcpcb.com/parts/2nd/Embedded%20Processors%20&%20Con... of which 6 are "promotional extended": STM8S105K6T6C (1213 in stock), STM32F103C8T6 (231496 in stock), STM32L151C8T6 (287 in stock), ATMEGA328P-AU (40476 in stock), STM32F030C8T6 (73009 in stock), and STM8S003F3P6TR (152762 in stock). 100 units of this last one will cost you US$30.47.
Where do I find the corresponding information on your web site?