Definition
The economic condition where available supply is strictly limited relative to total demand, establishing a steep upward-sloping supply curve and high price inelasticity.
In Panel Profits
The mathematical reality that vintage pre-1980 comic books have fixed surviving populations that can only decrease through attrition, making high-grade census copies strictly inelastic assets.
Comic-market example
Even if Action Comics #1 prices double to $6,000,000, the global supply of surviving copies cannot increase.
Calculation
Supply Inelasticity = (% Change in Quantity Supplied) / (% Change in Price) ≈ 0