I get beef liver regularly from foodservice direct .com - a restaurant supply place. Chicken liver too. Prices are good, usually at least a 10 pound purchase is required. I love beef liver, and from what I can glean, it’s the most nutritious food out there. It takes a bit to figure out navigation at that place, but you can find just about anything. Even Keto ice cream.
I am a lousy photographer, have a good camera and don’t know how to use it. I have taken some decent nature shots. It’s not on top of my list though. And the lighting in my kitchen sucks. If I don’t watch it, everything looks yellow.