Walmart profit margins are razor thin(4%?). Yes, they made billions but only because they had insanely high revenue. If you have a 30% extra cost, even if Walmart absorbed as much as possible (4%), the price would still go up 26%(actually more).

People who think companies can absord such a sudden and drastic increase in cost are clueless.

This video explored the tariff cost on computer hardware, with some companies giving actual numbers. It shows how even small increases in tariffs(or any cost) can completely destroy the bottom line

https://youtu.be/1W_mSOS1Qts

Pretty much all houses in Greece have this and no, it is only good for the summer or sunny days. But still it is a no brainer, unlimited free hot water during the summer and limited free hot water during most days.

The tricky part is calculating whether it was sunny enough(during the winter) to produce enough hot water for your shower or if you need to turn on the electric water heater.

Some greeks pre-emptively turn on the electric heater for 15-30 mins, other more financially stressed greeks prefer to gamble.