With this guide you can make about one thousand dollars per minute.

-Build a big melon farm
-Craft or buy a efficiency 5 silk diamond axe
-Craft or buy Slime Leggings
-Join Job Farmer
-Wait for melons to grow
-Harvest the Melons
-Go to spawn and sell them to Sell Merchant or /sell if you have it unlocked
-Repeat

If you follow all these steps and harvest the melons fast enough you will be making the one thousand per minute, and the higher your herbalism mcmmo skill and the higher is your farmer job the more money you will make.

This should be implied but i will say it, for this to work you have to wait for at least 95% of the melons to grow.

Have Fun Chopping Melons
-DarkBuilder5