I dont ever use FC to buy land upgrades, the larger the farm the more product it can produce, which makes more coin. The cost of the upgrades follows along with the income that size farm should be making for you.. You probably need more facilities if you struggling to afford the land upgrade costs. It doesnt take that much anymore to generate a billion coins a day. I be glad to help u with that if you want to contact me, Ive been able to help others get to the 1B mark fairly quickly.
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