I don't think I make the money I could if I wasn't such a sap...
I Can't send anything to an unknown fate, so nothing of mine will go through the markets. My sheep I don't keep go to my freezer and I will occasionally sell a half if the timing is right. Normally I'm too tight though and keep it all for me!
I sell spare eggs which pays for the chickens, and the odd bag of rabbit feed.
I can't manage without doing my 2 days in the real world, but strangely get a fairly good income from my aquarium. People BUY my aquatic plant cuttings/ramshorn snails etc. They even buy duckweed!!!! And Alder cones
I love my fishies