The deals you mentioned above are no longer available right now, but they might come back later. That means they also won't be listed in those stores.
It looks like the sellers offering the best deals don't keep very big inventories.
Nobody knows at this point since a ban isn't guaranteed, and even if it happens, it's not clear what would be included. You'll probably have to wait until the 23rd to know for sure.
I think it's a reasonable opinion and definitely a possible outcome. But the government can and will do whatever it wants if people quietly stand by and let it happen.