There is a chart without uk vat.
You can’t take off the the tariff as it is part of the total price.
The US doesn’t have a country wide single value tax, each state charges its own rate, sine do not charge any as taxes are generated from other sources.
The second chart is the closest thing to no U.K. tax, and no us tax as sales tax is added afterwards and not before. Until the tariffs are removed, they are part of an unchangeable chart and is required to understand the current differences.