Currency in Innworld consists of coins. In Izril (maybe other continents too), the primary coins are copper, silver, and gold pieces. The exchange rate is 10 copper for 1 silver and 20 silver for 1 gold. Therefore 1 gold piece is worth 200 copper.[1]
Coin denominations and values
| Copper | Silver | Gold | |
| Copper | 1 | 10 | 200 |
| Silver | 1 | 20 | |
| Gold | 1 |
It seems like gold pieces are the denominations of higher numbers too and there is no platinum or a next tier of more valuable coins. However, platinum, gems or magical gems can probably used as such, provided that all individual dealing in them know their exact value.
Ryoka remarked at one point:
Local currencies differ from city to city or by region. Here the currency is called Thestals, but that just means they have a unique weight and percentage of actual silver or gold used in each coin. Those who deal with money a lot care about the currency, but they’re all roughly silver, gold, and copper coins.[2]
- Summing things up, it means that Innworld adheres closely to the famous fantasy trope of the Gold-Silver-Copper Standard which allows quick assessment of value without going deeper into the intricacies of an underlying currency system. Which would probably bore most of the readers. Note that having a stable, universal system working on this trimetal standard means to trust everyone never to cheat this system (as institutions or as individuals), and that the value of all three metals remains perpetually unchanged. So far, no apparent central institution appeared that issues and standardizes the coins, and the banking system of the Merchant's guild was similarly not touched in the story. For real-world systems of a silver-gold bimetal standard, see Bimetallism.
Gold coins in the Wandering Inn site banner by Raoul Solomon
Gold coins in the Wandering Inn site banner by Raoul Solomon
market values of various objects or services
| Item/Service description | price in Gold coins | chapter |
| being screwed over by Lism | 3.4 | Chapter 1.13 |
| Terandrian gelato delivered to Celum | 70 | Chapter 1.02 R |
| Pisces' healing fee for Ryoka | 40 | Chapter 1.06 R |
| Rags' shiny sword and shield, bought by Erin | 4 | Chapter 1.32 |
| Wagonload of Shield Spider corpses harvested by Erin | 11 | Chapter 1.32 |
| low-class rechargeable magical protection items | above 800 | Chapter 2.08 |
| Ryoka's delivery run to Az’kerash | 800 | Chapter 2.12 |
| Valceif's mind protection charm | more than 1000 | Chapter 2.17 |
| Laken's initial [King's Bounty] treasure | 141 | Chapter 3.01 E |
| weak/faded rechargeable protection ring against arrows | 600 | Chapter 3.03 |