I get the strong impression that the Makro is the champion in higher prices these days.
It started when ownership was taken over from the Dutch by the Thai of course.
A few months ago I bought ansjovis a big jar, 750 gr for 750 thb, last week I tried to buy the same jar but it was no longer there. Only a smaller one of 250 gr and watch out, for the same price 750 thb! 3 times more expansive!