XML file name for changing Money?

There are many many files to the Sims 4 and I have read for hours. But I have yet to come across changes you can make to the price of items sold. I have seen changes to amounts of money given in a career but I want to find specifically the xml file that can change the price for the item sold. For instance, what if I wanted to change the price of a wildflower found in the wild to a much larger cash payout? Has anyone come across any of these files? Thanks in advance.