Mr. Qi is full of it

[Eminy]

how a poor farmer with only 25% profit, never even seen 100000k pieces of gold all together and only been eating berries and trash bread supposed to cook 100k worth of food

 

[HaleyRocks]

Same way, the same guy gifts diamonds to backwater villagers! Welcome to Stardew.

On a more serious note, check the wiki! Tips like buying flour in bulk, or acquiring lots of coffee (to make 3ple espresso), are absolutely fabulous!