This is the price to sell at Base Price 100%

Wood 33
Bricks 33
Wheat 33
Banana 50
Corn 50
Sugar 50
Hemp 50
Textile 150
Metal 83
Cotton 50
Tools 200
Dye 100
Coffee 140
Cocoa 140
Tobacco 100
Meat 300
Clothes 450
Rope 150
Rum 267
Bread 142

Zero Bar = 200% - 180%
First Bar = 180% - 120%
Second Bar = 120%
Third Bar = 120% - 80%
Fourth Bar = 80%

Base Price is 100%

PS: I somehow got this screen after my merchant fleet got attacked by pirates. Unbeknownst to them, I love chain shots and grape shots. I proceeded to tear their sails, kill their sailors and r**e I mean raid their ships. I found a single cocoa and this screen. Holy~

Pro tip: Press Q to slow down ship during battle.