Robert Sheckley,
Accept no substitutes
(1957)
“ Just this morning, one of the factory technicians finally confessed."The missing surrogate is not an Earth model!"I repeat," Danzer barked, "the missing surrogate is not an Earth model! The factory operators had been filling orders for the planet Algol IV. When they ran short of Earth models for humans, they substituted an Algolian model. Since the sale of a surrogate is illegal anyhow, they figured the customer would have no kickback."Garvey sighed with relief. He had been afraid he had a small dinosaur in the packing case, at the very least. ”
