@EmpiresPuzzles, Hi, i just started to upgrade my Advance farm from lvl 5 to 6 and it costs us 1230K of HAM, but i think game reduced my available food by much less HAM, not 1230 K. I had around 2300K+ and its still same while Farm upgrading has started. May please see if that interest you.
I play on android and have latest version 33.
Let me know if you need more details.
Sachin