I’m probably reading too much in your remark, but....
please do not equate gasoline prices with the price of milk. :)
https://www.usnews.com/news/best-states/vermont/articles/2019-04-02/dairy-summit-looks-for-solutions
My sole concern in this case is gasoline.
No one has as yet explained the phenomenon of simultaneous price rise.
Not even sure the attempt has been made.
I’m quite convinced dairy prices are driven entirely by market forces, BECAUSE they differ across brands and locations within the community.
The same way the price of gas DOESN’T.