Stolen from Reddit
https://www.reddit.com/r/dataisbeautiful/comments/1ftmkwt/oc_foods_cost_vs_caloric_density/
But I loved it. Also this has Shrimp removed, because it was on the OG chart due to an error and this is an updated version.
EDIT: Here is one for protein! https://www.reddit.com/r/budgetfood/comments/1fp2ytb/foods_cost_per_gram_of_protein_vs_protein_density/#lightbox
Pistachios seem awfully cheap from what I know pistachios to cost even considering high caloric density.
https://www.amazon.com/dp/B07PBKZZ51?tag=sacapuntas9-20&linkCode=osi&th=1&psc=1
4160 calories for 14.23
Coming out to 292 calories per dollar, or around 30 cents for 100 calories. Looks to be about where it's at! He might have found an even cheaper source. I think this chart does a great job of pointing out that just because things like almonds are more per pound than chicken, doesn't mean they aren't better deals if you are concerned with energy.
Wow, they are incredibly cheap in the US - in Australia they are nearly double the price per kg.
Oh yeah he mentions his source is Walmart in a specific state, but amazon is more consistent here.
Always interesting to hear how different stuff is in different countries!