If they did not raise the retail price on the tariff affected product as much as it needed to be, to maintain their planned markup on the product, they can raise other products initial mark up, to cover for the loss on the tariffed item.
Also, they don't know what trump will do next and every single step and tariff change of Trump's affect them....but it doesn't affect them until the product hits the port of entry, which is about a 4 to 6 week boat ride from the factory finished goods to the importer landing the goods in a US port....in that time period, Trumps chaotic tariff announcements going from 10% to 25% and then to 150% and then back down to 50% etc etc etc etc....
in those 6 weeks of travel time leaves importers and retailers with no choice but planning for the worst, but hoping for the best....
or coming out with another strategy of just raising all of their retail prices by 10%, to help them average out, what the tariffs will be.
Unlike Biden, who had no control over inflation from the supply side shortages from covid, THIS INFLATION, is solely caused by Trump and his chaotic, knee jerk, tariff proclamations....
You won't know if the retailers are over compensating on their projected tariff costs, until we see their profit margins, and whether they have gone up, above their normal profit margin.