Technically my dad's longest job was factory worker so not on IT salary but on factory worker salary owning a farm (in Italy) to sustain one family for everything from vegetables to meat to cereals to whatever is quite costly. You don't have much a fortune left at the end of the month, that's for sure.
Everything needs regular maintenance, animal cages, fruit trees, the soil. You need a lot of tools, such as metal wires and metal panes for the animal houses. Wood panels and insulating material if you want to go deluxe. Everything to cover the more delicate vegetables for harsh temperatures and bad weather. A place to dump the animals' and green waste, I don't know what it is called in English. You dump everything in there where it ferments so you can use it for the soil after harvesting. Preparing a good soil for next year's harvest may be the highest cost depending on large your fields are, and even if you take good care of it good and bad weather can screw you royally.
It's an all-year job, it can be very satisfying if you are sick and tired of the city. I've read many people go nature at the beginning of their pension.
EDIT: I just realized I posted in off topic. Ops?
