Why the Most Saleable Commodities Become Money: The Economics of Liquidity and Trust

In the vast web of global trade, some goods rise above others—not due to the fact that of their intrinsic utility, but because of their saleability. This concept, first articulated by economist Carl Menger in the 19th century, explains why certain commodities—like gold, silver, and, more recently, digital assets—become the backbone of monetary systems. But what makes a good “saleable,” and why do these goods naturally evolve into money? The answer lies in a combination of liquidity, trust, and the universal need for a reliable medium of exchange.

The Origins of Saleability: Menger’s Insight

Carl Menger, a founder of the Austrian School of Economics, defined saleability as the “facility with which [a good] can be disposed of at a market at any convenient time at current purchasing prices.” In simpler terms, a saleable good is one that can be easily bought or sold without significant loss in value, regardless of time or location. Menger argued that in a free society, the most saleable goods would inevitably become money because they fulfill three critical functions:

1. Medium of Exchange: They are widely accepted in trade.
2. Store of Value: They retain purchasing power over time.
3. Unit of Account: They provide a standard measure for pricing other goods.

Gold, for example, became a global monetary standard in the 18th and 19th centuries because its demand was consistent across borders, and its value remained stable or appreciated over time. Unlike perishable goods or niche commodities, gold’s liquidity made it ideal for large-scale trade and long-term savings.

Why People Prefer Saleable Goods in Trade

Imagine a farmer who grows wheat. He needs shoes, but the shoemaker doesn’t need wheat. In a barter economy, this creates a problem: the farmer must find someone who both needs wheat and has shoes to trade. This is known as the “double coincidence of wants,” and it’s a major inefficiency in direct trade.

Now, suppose the farmer trades his wheat for gold instead. Gold is universally desired, so he can easily exchange it for shoes—or anything else—later. This is the power of saleability: it reduces transaction costs and makes trade smoother. Over time, people naturally gravitate toward the most saleable goods because they minimize friction in economic exchanges.

But saleability isn’t just about convenience. It’s also about trust. A saleable good must be durable, divisible, portable, and verifiable. Gold checks all these boxes: it doesn’t corrode, can be melted into smaller units, is easy to transport, and its purity can be tested. These properties develop it a reliable store of value, which is why it has been used as money for millennia.

The Evolution of Money: From Commodities to Digital Assets

While gold dominated monetary systems for centuries, the 20th century saw a shift toward fiat currencies—money backed by government decree rather than a physical commodity. Yet the principles of saleability still apply. A currency’s value depends on its liquidity and the trust people place in it. The U.S. Dollar, for example, is the world’s most widely used reserve currency because it is highly liquid and stable relative to other currencies.

In the digital age, new forms of money have emerged, challenging traditional notions of saleability. Cryptocurrencies like Bitcoin are often described as “digital gold” because they share some of gold’s properties: scarcity, durability, and portability. However, their saleability is still debated. While Bitcoin is liquid on major exchanges, its price volatility and regulatory uncertainties make it less stable than traditional currencies or commodities. This raises an important question: Can a digital asset ever achieve the same level of saleability as gold or fiat money?

Proponents argue that Bitcoin’s decentralized nature and fixed supply make it a superior store of value in the long run. Critics, however, point to its speculative nature and lack of widespread adoption in daily transactions. The answer may lie in how well these assets can address the core challenges of money: liquidity, trust, and utility.

Saleability in Modern Markets: Beyond Money

The concept of saleability extends beyond money. In financial markets, liquidity is a key measure of an asset’s saleability. Stocks of large, well-known companies (like Apple or Microsoft) are highly liquid because they can be bought or sold quickly with minimal price impact. In contrast, shares of a small, private company are illiquid because finding a buyer may capture time and could require a significant discount.

Algorithmic trading has further amplified the importance of saleability. High-frequency trading firms rely on liquid markets to execute thousands of trades per second, profiting from tiny price differences. For these firms, saleability isn’t just about convenience—it’s a matter of survival. An illiquid market can lead to slippage, where a trade executes at a worse price than expected, eroding profits.

In international trade, saleability plays a critical role in trade finance. Exporters often use methods like forfaiting to convert future receivables into immediate cash. This process relies on the saleability of the exporter’s invoices, which are sold to a third party at a discount. The more saleable the invoice, the lower the discount—and the more cash the exporter receives upfront. This highlights how saleability directly impacts the cost of doing business globally.

Key Takeaways: Why Saleability Matters

• Saleability is the foundation of money: The most saleable goods naturally become money because they reduce transaction costs and build trust.
• Liquidity is king: An asset’s saleability depends on how easily it can be bought or sold without losing value.
• Trust is non-negotiable: For a good to be saleable, it must be durable, divisible, portable, and verifiable.
• Digital assets are testing old rules: Cryptocurrencies challenge traditional notions of saleability, but their long-term success depends on liquidity and stability.
• Saleability extends beyond money: In financial markets and international trade, liquidity determines efficiency and profitability.

FAQs About Saleability and Money

1. What is the difference between saleability and liquidity?

Saleability and liquidity are closely related but not identical. Liquidity refers to how quickly and easily an asset can be converted into cash without affecting its price. Saleability is a broader concept that includes liquidity but also considers an asset’s demand across time and space. For example, gold is both liquid and saleable because it can be sold quickly anywhere in the world, and its value is relatively stable over time.

2. Why did gold become money instead of other commodities?

Gold became money because it excelled in the key properties of saleability: durability, divisibility, portability, and verifiability. Unlike perishable goods (like wheat) or bulky commodities (like cattle), gold could be stored indefinitely, divided into small units, transported easily, and its purity could be tested. These properties made it ideal for large-scale trade and long-term savings.

3. Can cryptocurrencies like Bitcoin ever replace fiat money?

Bitcoin and other cryptocurrencies have the potential to complement or even replace fiat money in certain contexts, but several challenges remain. For Bitcoin to achieve the same level of saleability as fiat currencies, it would need to address:

• Volatility: Bitcoin’s price swings make it less reliable as a store of value.
• Regulation: Governments and central banks may resist decentralized currencies that bypass traditional financial systems.
• Adoption: For Bitcoin to become a true medium of exchange, it must be widely accepted by merchants and consumers.

While Bitcoin has made progress on these fronts, it is still far from achieving the universal saleability of gold or the U.S. Dollar.

4. How does saleability affect international trade?

In international trade, saleability determines the efficiency and cost of transactions. For example, an exporter who sells goods on credit may struggle to find buyers for their invoices if the importing country’s currency is illiquid or unstable. Methods like forfaiting help exporters convert future receivables into immediate cash by selling their invoices to a third party at a discount. The more saleable the invoice, the lower the discount—and the more cash the exporter receives upfront.

5. Is bartering still relevant in modern economies?

Bartering—trading goods and services without money—is still practiced today, particularly in informal or local economies. While it is legal in most countries, bartering has limitations:

• Double coincidence of wants: Both parties must have something the other wants, which is rare in complex economies.
• Lack of scalability: Bartering works for small, one-off trades but is inefficient for large-scale or frequent transactions.
• Tax implications: In many jurisdictions, barter transactions are subject to income or sales tax, even if no money changes hands.

While bartering can be useful in specific contexts (e.g., local communities or during economic crises), it cannot replace the efficiency of money in modern economies.

The Future of Saleability: What’s Next?

As technology evolves, so too will the concept of saleability. Digital assets, central bank digital currencies (CBDCs), and even tokenized real-world assets (like real estate or commodities) are redefining what it means for a good to be saleable. The rise of decentralized finance (DeFi) and blockchain technology could further democratize access to liquidity, making it easier for individuals and businesses to trade assets without traditional intermediaries.

However, the core principles of saleability—liquidity, trust, and utility—will remain unchanged. Whether it’s gold, fiat money, or a digital token, the most saleable assets will always be those that best serve the needs of trade, savings, and economic stability. As Menger observed, the market’s invisible hand will continue to guide the evolution of money, selecting the most saleable goods to fulfill this critical role.