Eh I just decided that $3-5 extra is fine for not causing immense amounts of physical suffering to some poor animal for my burger meal.
It doesn't seem such a clear cut ethical decision to me. Certainly there are some forms of raising livestock that are terrible (broiler chickens come to mind), but there are other forms that actually seem quite pleasant for the animals most of the time (e.g. free-range cattle).
https://www.dominionmovement.com/facts - Ctrl-F "free range"
You actually could find a reliable and cost effective source of ethical ranching, it typically requires buying e.g. a whole side of beef from a specific ranch.
Not very convenient, but if you worry so much about the conditions of the animal, that gives you a way to choose one that fits your standards.