This is something every country has (no matter where, all have a form of VAT and sales tax) but a majority of nations include VAT within the price of the product whilst in the US that’s calculated upon checkout (so technically you are not paying $789 for a steam deck since you add tax, so that amount alone isn’t final).
So in reality, it’s closer to $820 or a game that’s $80 ends up to $95 but are either purchases possible whilst earning $15 per hour? Take the PS5: it’s ¥97,980 inc. 10% CT ($603) while the same is $650 but closer to $680 or more when you add SALES TAX, you can buy the same console in Japan since taxes are included.
Sales tax is a regressive tax that disproportionately feels more expensive if you have lower income. Its the same as a speeding ticket or a fine being ‘the cost of doing buisness’ if you’ve got enough money to throw around.