Since I have no idea of what I speak this is for entertainment purposes only – as always!

In 1975 Brazil had a severe frost and coffee prices started to rise – reaching $3.399 in April 1977. 

In July of 2021 Brazil had another frost (severity to be determined) and coffee prices started to rise. Using the US CPI Index, the value of $3 in 1977 would be the equivalent of $15 today.

Coffee CPI adjusted

Coffee long term

Coffee recent

Coffee Point & Figure