This article contradicts my (sample size of one) observations at local grocery stores (in central PA, USA). Pork has been and remains the cheapest meat in the grocery store and there's pork there even when beef and chicken shelves are empty. In contrast, I just ordered a 1/4 cow from a local farm because beef prices have continued to go up. Fortunately, we have a large freezer! During the COVID-19 pandemic, the meat that is hardest to purchase is chicken wings.
Here's an interesting question ... if pork is so cheap, why are bacon and ham so expensive?