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You cannot price an entire economy from a single “difficulty” score. Economic complexity measures can describe the productive capabilities suggested by a country’s exports, but they do not directly measure unit production costs, trade costs, or the cost of living. Those are related questions, not interchangeable measures.
What “difficulty” means in economic complexity
“Pricing an economy off its difficulty model” is not the established name of a standard economic model. The closest supported interpretation is economic complexity: the productive capabilities and know-how needed to make a diverse range of goods, especially products that are less commonly made.
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The Harvard Growth Lab’s Atlas of Economic Complexity describes the Economic Complexity Index (ECI) in terms of the diversity and complexity of a country’s export basket. The index is therefore a proxy for productive capabilities, not a direct inventory of everything an economy can produce. It does not capture all domestic production or services simply because those activities may not appear in the export basket used to construct the measure.
The Atlas glossary also describes a practical production challenge: moving into products farther from a country’s existing capabilities can require coordinating missing know-how and inputs. Greater distance in the product space is associated with lower relatedness to existing know-how and greater risk in entering production. That helps explain why some products may be harder for an economy to start making; it does not tell us how much each unit will cost once production is established.
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Capability, production cost, trade cost and living costs are different questions
| Question | What it measures | What it does not establish |
|---|---|---|
| Capability | How diverse and complex a country’s export basket is, as an indicator of productive know-how. This is the territory of ECI-style measures such as the Harvard Growth Lab Atlas’s. | The cost to produce a particular unit, or the prices paid throughout the economy. |
| Production cost | The labor, inputs, capital, technology and coordination costs involved in making a specific good. | The sources considered here do not provide a complete operational model that converts an economy’s complexity score into a product’s cost. |
| Trade cost | The costs associated with selling across borders. The WTO Trade Cost Index reports bilateral estimates by economy and sector; its stated coverage is 75 economies and 25 sectors from 1995 through 2022. | A country’s general productive capability or domestic cost of living. The WTO resource may be updated, so consult its live coverage when using the figures. |
| Price index or cost of living | How prices, product variety, quality and consumer substitution combine into a measure of price change or living costs. | A direct measure of production difficulty or productive capability. |
A complex economy might have capabilities to make goods that are unavailable or costly to produce elsewhere. But complexity by itself does not show whether those goods are made with more expensive inputs, produced more efficiently, or sold at higher prices. Those answers depend on the specific product, firms, inputs and market conditions.
Why observed prices do not tell the whole story
A simple comparison of average sticker prices can miss changes in what consumers can buy and the quality or appeal of those products. It can also miss consumers switching between products when prices or available options change. Price indexes must address these issues if they are to compare purchasing power or trade patterns meaningfully.
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In the February 2024 U.S. Census Bureau Center for Economic Studies working paper Accounting for Trade Patterns, Stephen J. Redding and David E. Weinstein explain that, when firms’ products are imperfect substitutes, price indexes depend on “variety, average appeal (including quality), and the dispersion of appeal-adjusted prices.” In their framework, variety and average appeal, including quality, accounted for 40% of cross-section variation and 90% of time-series variation in comparative advantage; average prices accounted for less than 10%. These are findings from that paper’s analysis, not a general rule about all price indexes or economies.
A separate study, “Quality Adjustment at Scale: Hedonic versus Exact Demand-Based Price Indices,” appeared in the American Economic Review in June 2026. Its focus on quality adjustment illustrates why a price comparison is a measurement problem in its own right: a recorded price alone may not represent the value or quality consumers receive.
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What export prices can reveal—and what they cannot
Export prices can be useful in research on product quality and trade. The European Union publication Economic complexity analysis of export prices, released in February 2024, treats prices as information that can be analyzed in the context of products and trade. But a high or low export price is an indirect signal: it may reflect quality, product mix, the destination market or other conditions, rather than production difficulty alone.
For that reason, export-price analysis and ECI answer different questions. ECI-style measures describe patterns in what countries export; export prices add information about prices attached to traded products. Neither alone provides a complete account of an economy’s production costs or the prices households face.
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What current complexity theory adds
A June 2025 theoretical working paper by César Hidalgo and Viktor Stojkoski, revised in August 2025, connects ECI to the likelihood that an economy possesses many factors of production. It models short-run prices, wages and consumption. This offers a way to reason about how productive capabilities may relate to economic outcomes, but it is a theoretical result—not a universal empirical rule for calculating prices from a complexity score.
Broader caution is warranted. A review published in Economic Analysis and Policy in September 2025 flags unclear definitions, limited theoretical grounding, bias arising from gross exports, and mismatches between a proposed concept and the way it is estimated. These limitations matter when interpreting a ranking: what the index represents depends on its definition and data, and a score should not be treated as a direct reading of every productive activity.
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How to use these measures without conflating them
- To compare productive capabilities: use an ECI-style measure as an export-based proxy, and state that scope rather than calling it a direct measure of all production.
- To estimate the cost of a good: examine the relevant labor, inputs, capital, technology and coordination requirements. A country-level complexity score is not a substitute for those product-level costs.
- To compare cross-border frictions: use a trade-cost measure such as the WTO Trade Cost Index, checking its economy, sector and year coverage.
- To compare prices or living costs: use a suitable price index that accounts for changes in variety, quality and consumer substitution—not an export-complexity score.
- To interpret export prices: read them alongside product, market and trade context rather than treating price as a standalone measure of quality or difficulty.
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