Yes, this. They are roughly the same baseline price.Ok, sure, you are correct, removing tax makes the price of the iPhone in the U.K. the same as the US,
Only the majority cannot buy one without paying the tax.
People in the US will pay sales tax on their devices too, whatever their state sets.
If the UK became part of the USA and charged a 20% sales tax, it would work out the same.
If there was a US state with a 20% sales tax, the final taxed amount would around the same in GBP.
If you fail to see it spelled out this plainly, I’m not wasting more time here. It’s not a trick, it’s not a lie, it’s not a shifting of goalposts or any other way to “win or make an argument” - it’s how things work.