Did you know Blue Jeans Cable cables are available on Amazon Prime now? Sorry if this is old news but I don't think I've ever seen it mentioned. They are "Sold by Blue Jeans Cable and Fulfilled by Amazon".
You pay a premium, obviously...
e.g. Coaxial Digital Audio Cable, 1 metre, Black £21.75 on Amazon £16.00 from BJC's UK website + postage.
...but if you need one overnighted it's worth remembering.
I didn't used to need the internet, my wife knew everything.