He is right, but in the real world. Do you really do the following?
Postman comes, here, sign.
Close the door, realises you didn't pay your VAT...ah crap, grabs car keys, jump into car, chase delivery van with your wallet, beep beep! Stop! You forgot to take my money!
You then find out the postman don't take cash. (Someone will say UPS does but he needs a form from the office).
Then you stand there on the side of some country lane working out tax and duty, but then how much exactly? Are you sure it is exact to the penny? Is this pedalboard (because I am thinking of getting one made in the US) that made out of wood class as an instrument or furniture…, musical instrument carries a duty rate range from 0% to 12%...now which one is it? Ah crap, he also has no change and I only have notes....
Then the driver says, call our office...
You go home, called the office, noooo, it's Saturday and it's past 1pm and they are shut. So on Monday you are determined to pay, take a day off to drive to the depot...here, this is my parcel, this is my bank statement, see how much it costs? It is made of Walnut in parts, does it make a difference between normal wood and tropical hard wood? Ah, so this is how much money I owe... sure, can I have a form to fill in to pay my VAT and taxes please? What? You don't take cards?
Seriously? Lol
I buy items and I pay my taxes. I try not to chase after people to give them money........if they present me with a bill that I owe, I'd be gladly pay it. I've had my lucky share of Amazon parcels that has correct declared value that got lucky, who hasn't? It goes back 15 years of purchases online...am I really expected to go pay them now? Are you going to go back and pay yours? Do one really call up HMRC after the postman has been and pay the VAT and Duty? Or does one thinks "hmm lucky day" and get on with their lives.
I always budget for the VAT and duty and don't even grumble paying the handling charges anymore. What I don't do is jump on people for buying things online.