How are real and fictional currencies compared?

The basic principle

The comparison needs two relationships:

1. The real currency's value against a common currency, such as the U.S. dollar.
2. The price of the fictional currency or object in that same common currency.

Assume that:

• 1 U.S. dollar equals 1,000 units of a real currency.
• A package of 800 fictional credits costs 8 U.S. dollars.

The price per credit is:

8 / 800 = 0.01 USD

Converted into the real currency:

0.01 × 1,000 = 10 real currency units per credit

This creates a price equivalence between the two units.

Which reference to use

The comparison's quality depends on the selected reference. When possible, it should use:

• An official price from the product issuer or owner.
• A package normally available to the public.
• A final price that identifies taxes and region.
• A clearly specified number of units.
• A source that can be checked again.

If the fictional currency is not sold separately, the calculation may need the price of a product that contains it. In that case, the method must explain that the price also covers other components and that the allocation is approximate.

Packages do not always have the same unit price

Virtual currencies are often sold in packages with discounts or extra units. The implied unit price can change by package.

For example:

• 500 units for $5: $0.01 per unit.
• 1,200 units for $10: about $0.0083 per unit.

There is no universal value. The methodology uses a consistent reference, such as the basic package, the smallest available package, or one specific documented package.

Changing the package can change historical data even when the exchange rate does not move. Every methodology change must therefore be recorded.

Bonuses and included currency

A package can contain “extra” units. From the buyer's perspective, these units are part of the received amount and reduce the effective unit price. It can still be useful to separate base units and bonus units when the provider presents them separately.

Subscriptions, temporary promotions, discounted cards, and regional prices can also create different equivalences. A limited offer should not automatically replace a stable reference in a historical series.

Purchase does not mean convertibility

A virtual unit can be sold for U.S. dollars or another real currency without being available for resale.

Possible restrictions include:

• Use only within one platform.
• No user-to-user transfer.
• No refund.
• Expiration or dependence on an account.
• Price and term changes by the issuer.
• Different use value depending on the purchased item.

The calculation therefore represents an acquisition cost, not necessarily a market exchange rate or liquidation value.

Comparing money from a physical game

In a board game, banknotes have a face value under the rules. The set is sold as part of a physical product.

Two approaches can create a reference:

Price of the complete set

Add the nominal amount of included money and divide the game's price by that total. This assigns the full product price to the money, even when the box also contains a board, tokens, cards, and other components. It is simple, but it overstates the cost of the banknotes.

Price of an official replacement money pack

If the manufacturer sells a separate pack, its price provides a more direct reference. The product must be official, the amount must be documented, and it must be comparable with the selected edition.

When no perfect reference exists, the approximation must be explicit.

Dates, currencies, and regions

Digital products can have different prices by country, platform, tax treatment, or store. Every method must identify:

• Price region.
• Original currency.
• Observation date.
• Selected package.
• Units included.
• Whether taxes are included or excluded, when known.
• Exchange-rate source.

A historical comparison must not mix prices from different regions without normalization.

What the result shows

The result shows the acquisition cost produced by the selected package, price, region, date, and exchange rate.

It does not show that the units are interchangeable, carry the same risk, can be exchanged directly, or are investments.