Do you know what model number the yanmar was? Or what horsepower? We were literally about to sign on the dotted line for one (35 hp, manual) when we found our fergie.
Yanmar are very good. The John Deers are literally out of the Yanmar factory with green paint on.
I have all the yanmar brochures with new prices as of a couple of months ago, if you would like me to scan and send them to you.
They basically come with maual gearbox or hydrostatic, manual is cheaper. (in a nutshell, as far as I understand it, hydrostatic: like an automatic, there's no clutch, but you still select a gear and the higher your revs the faster you go in that gear. Hydraulic driven not direct from the engine)
It will be VERY hard to compare used prices on them, as there are very few used ones around, people don't tend to offload them, which is a good sign. The dealer we went though reckons he's had a couple of trade ins on them only when the people were trading up to a larger horsepower version.
Yep yields are usually quoted in actual grain yield.
I reckon the threshing and winnowing sounds quite fun too.
People have been doing it by hand for millenia so there's no reason it can't be done that's for sure.
The thing with growing your own wheat will be selecting and obtaining seed varieties that are appropriate for what you want to use it for, hard varieties for bread & noodles, soft for biscuits and cakes. And higher rainfall eg tas, often means lower protein content, so less suitable for bread.
Two roads diverged in a wood and I -
I took the one less travelled by,
And that has made all the difference.
~ Robert Frost