Maybe i wasnt too much clear, but i think i couldnt get the output i wanted. The lowest price column needs to be matching by id. Below, theres a part of the dataset with the 2 new columns. The arrows refers to Product ID, Our Price and Competidor Price, respectively. The new calculated columns aren't returning any price value for this ID (256).
I want to build a matrix like this (sum lowest prices of products of each category):
I didn't understood too much the category slicer that you put to change the values. I have Date, Store and Competidor Slicers on my report, and the matrix above needs to filter according to these criterias.