Starting Equipment
Every character starts with a selection of equipment and adventuring gear in their inventory. When creating your character, after selecting your class and background, you may decide to start with the equipment listed in your class's starting equipment or start with a set amount of Belly (฿) to spend on equipment of your choice.
If you opt to forgo taking your class's starting equipment, you may roll the amount of starting wealth you have on the table below based on your class. Then, buy any amount of equipment you'd like.
Starting Wealth by Class
Class Funds
Bruiser 2d4 x ฿100,000
Chemist 2d4 x ฿100,000
Hybrid 3d4 x ฿100,000
Marksman 5d4 x ฿100,000
Martial Artist 5d4 x ฿10,000
Priest 5d4 x ฿100,000
Rogue 4d4 x ฿100,000
Skald 5d4 x ฿100,000
Tinkerer 4d4 x ฿100,000
Warrior 5d4 x ฿100,000
devilforged 3d4 x ฿100,000
Wealth
While Belly (฿) is the primary currency used for buying goods and services, wealth can appear in many forms in the One Piece world. Rare weapons, devil fruits, gemstones, gold, treasure, and other valuables can all be exchanged for other equivalent items or for a portion of their value in Belly (depending on bartering skills).
Because Belly is the world's primary monetary unit, it is what most islands and nations use to trade. You are free in most places to trade an item that is considered to be worth a set amount in Belly for an item of equivalent value in Belly. Occasionally, other forms of currency may be found and used on different islands around the world (typically if they are secluded from other major islands and nations). Some of these currencies have unknown conversion rates in canon, but you may choose to use the conversion tables down below.
Belly (฿) Paper and Coins
Belly is a currency that is given value by the world government and various nations and kingdoms around the world. Not all islands use Belly as the standard currency, though most will be willing convert it over to their nation's currency. Belly has six known coin denominations and three known paper denominations, with no fractional units (though the DM may make additional denominations if desired). The denominations are as follows:
Coin: ฿1, ฿5, ฿10, ฿50, ฿100, and ฿500
Paper: ฿1,000, ฿5,000, and ฿10,000
Belly (฿) Conversion
Converting different currencies, such as Belly in the One Piece world and the precious metal coins in the Forgotten Realms is a simple process. This conversion isn't considered canon, but it is solid approximation of the worth of each currency when converted to a different type of currency.
Exchange Rates
Currency ฿ CP SP EP GP PP
Belly (฿) 1 1/100 1/1,000 1/5,000 1/10,000 1/100,000
Copper (cp) 100 1 1/10 1/50 1/100 1/1,000
Silver (sp) 1,000 10 1 1/5 1/10 1/100
Electrum (ep) 5,000 50 5 1 1/2 1/20
Gold (gp) 10,000 100 10 2 1 1/10
Platinum (pp) 100,000 1,000 100 20 10 1
Additional Currencies and Exchange Rates
Many islands and nations separated from the rest of the world often use alternate forms of currency that can be used for trading within their borders. Additionally, most of the time you can exchange Belly (฿) for an amount of that nation's currency equal to the number of Belly (฿) exchanged.
Extol
Extol is the currency used in Skypiea. This currency can be used and traded across a number of sky islands, and can also be exchanged for Belly (฿).
The standard exchange rate is 10,000 Extol = 1 Belly (฿).
Gor
Gor is the currency used in Amazon Lily. Although the exchange rate isn't officially defined in canon, you may use the below exchange rate.
The standard exchange rate is 100 Gor = 1 Belly (฿).
Silver, Gold, and Platinum
Silver, Gold, and Platinum are the standard currencies used in Wano Kuni. You may use the above table of exchange rates for corresponding precious metal coins to determine exchange rates within Wano Kuni.
Selling Treasure
After journeying across several islands and uncovering various hidden treasures, you may decide to sell what you don't wish to keep in exchange for a large sum of Belly (฿), provided that you find buyers who can afford to do so.
Arms, Armor, and Other Equipment
Undamaged armor and weapons will typically sell for 1/10th of their cost when sold to any market. Any standard damaged or used equipment won't have much value to any buyer.
Devil Fruits, Cursed/Named Weapons, and Other Rare Items
Unlike ordinary equipment, devil fruits and special weapons or equipment aren't easily damaged and can be sold for extremely high prices in a black market. The price they are sold for may depend on how legitimate the buyer is or how desperate they are to obtain it. Underground auctions are another way to get a large sum of money for any rare item. Ordinary markets or civilians will not be able to afford these types of items.
Gems, Precious Metals, Jewelry, and Art Objects.
These items may be found inside treasure chests, sunken ships, or unexplored ancient ruins. Regardless, these items retain their full value in any reputable marketplace. For large amounts of treasure and valuables, your DM may require you to find a particularly wealthy buyer or marketplace in a large city.
Trade Goods
Across most islands and continents, raw materials such as ore, salt, grain, and livestock will often retain their full value in any market across the world, much like Gems, Precious Metals, Jewelry, and Art Objects.