Heck, in the valley, IRL fulfillment (willcall)/retail of electronic components is limited: (Halted isn’t organized and sells mostly used stuff without ESD management anywhere, Fry’s is a joke). Maybe you can will-call some places (Jameco), but the main sources like FleaBay and DigiKey don’t compare to IRL/right-now like Shenzhen highrise of everything bad fakes, good fakes and authentic. If you’re prototyping and about to do small runs it’s much easier in China because suppliers of all sizes and contract manufacturers right there, and can turn-around PCBs in a couple of hours. America doesn’t have anything remotely close to the density and rapid business efficiency of Shenzhen.