For my Rose Root Miller 2 eBike, I walked to the Rose Store and they ordered it online. Same https like all.
Waited 3 weeks
My Dengfu E10 frame, battery and M510 I ordered online.
The locsl stores: i gave up. Really.
"You need new cassette? I can order one on next Wednesday. It will be here on following monday"
Me: we have Saturday. thats more than a week! I need it now.
Same with tires or break pads.
Only normal stuff to get, like baskets , helmets, standard road tires, locks.
Or go to a specialized shop, which is open Monday, Tuesday and Wednesday, between 11:23 and 13:35. But it is more expensive than other shops, unwilling to order or oders are forgotten.