The Waterdeep Trading Company knows that profit is not only what is carried, but how, when, and in what quantity it is delivered. Perishable goods demand speed, luxury goods reward distance, and transportation—whether caravan, ship, or portal—carries its own costs. Scale, the merchant’s hidden lever, can turn a marginal route into a fortune.
Perishables: Fighting Spoilage
Perishable goods—food, drink, herbs, potions, and livestock—lose value with time. Every week of travel cuts into margin unless preserved by salt, ice, or enchantment.
- Caravans: slow, cheaper per unit, but high spoilage.
- Ships: faster, large loads, but weather-sensitive.
- Portals: instantaneous, preserve freshness, but costs scale poorly.
Luxuries: Gaining with Distance
Luxury goods—spices, silks, jewelry, perfumes, planar reagents—gain value with distance. Buyers pay for scarcity, prestige, and the risks endured to bring them.
- Caravans: increase value with each league, but invite theft.
- Ships: move bulk luxuries at moderate cost, maximizing margin.
- Portals: flatten distance premiums, but allow nobles to secure rare goods instantly.
The Role of Transportation & Scale
Transportation cost is not fixed. Moving one crate by teleportation circle may equal the cost of an entire caravan. Merchants calculate economy of scale before deciding the method.
Caravan Freight
- Cost: Low per unit when wagons are full.
- Scale Advantage: Larger caravans reduce per-unit guard and wagon costs.
- Limitation: Spoilage eats margin for perishables.
Maritime Shipping
- Cost: Moderate per unit, with large holds reducing cost further.
- Scale Advantage: Best for bulk grain, silks, and ore.
- Limitation: Risk of storms and piracy.
Arcane Portals
- Cost: Extremely high base (e.g., 500 FSD per casting).
- Scale Advantage: Costs spread across more goods if the portal is fully loaded.
- Limitation: Not suited to bulk, but invaluable for high-value perishables and urgent luxuries.
Comparative Economics Table
To bring these principles together, it is helpful to compare how different goods behave under varying methods of transport and scale. The following table illustrates the practical economics of moving both perishables and luxuries by caravan, ship, or portal, showing not only the base cost of each method but also how per-unit expenses shift when moving small loads versus bulk consignments. By examining both spoilage and appreciation alongside transportation cost, merchants can see where profit is gained, where coin is lost, and why the Waterdeep Trading Company selects routes with such care.

Realms-Aware Considerations
While ledgers and tables reveal the numbers, true trade in Faerûn is shaped by the lands, climates, and powers that goods must cross. A caravan moving through the frozen North faces different challenges than a ship sailing to Calimshan, just as planar imports demand rules unlike any mortal route. These local and magical conditions shape spoilage, scarcity, and demand in ways no simple calculation can capture. The following considerations highlight the realities that every Waterdeep Trading Company factor must weigh before sending a wagon, ship, or spell across the Realms.
- Bulk vs. Urgency: Grain caravans thrive on scale; healing potions justify portal expense.
- Climate: Hot regions make portal transport more attractive for perishables.
- Noble Demands: Aristocrats often pay for instant luxury, ignoring efficiency.
- Planar Imports: Exotic reagents justify high costs because no local substitute exists.
Final Thoughts
Economy of scale separates thriving merchants from failed ones. Perishables belong to wagons and ships unless urgency demands portals. Luxuries grow more valuable with distance, but risk premiums and transport costs must be measured carefully. The Waterdeep Trading Company prospers by balancing spoilage, scarcity, transportation, and scale to turn every journey into profit.
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