The fact that they are benefiting as a consumer because of location based salaries is another point against them. Pitting “closing down the ‘sweatshops’” (i.e. unemployment) as the only alternative for the workers is disingenuous. Another alternative is worker control over the factories. Yes OP as a consumer will loose some luxury as the price of consumer products rises along with the workers’ pay, but what natural law states that the OP has the right to that luxury at the cost of foreign workers?
The original point, you deserve the value of your work in salaries regardless of your location still holds. Even more so when it is applied to the global scale. And the fact that it isn’t applied on the global scale is just another fact pointing to the fact that we live in an unequal economy that exploits workers. Instead of rejecting this, OP should have reached the conclusion that there are alternative worker arrangements which would benefits workers globally.