| 1. | There are substitute goods too, which are in competition with each other.
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| 2. | A submodular utility function is characteristic of substitute goods.
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| 3. | All bidders regard all items as pure substitute goods, so their valuations are unit demand.
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| 4. | That's a problem because companies say they can't easily substitute goods made in other countries.
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| 5. | The 1874 invention of root rubber, quickly established it as a substitute good for traditional rubber.
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| 6. | We should be substituting good fats for bad ones rather than worrying about reducing the total amount of fat.
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| 7. | In addition, consumers have shifted to substitute goods because they have less money to buy imports, " he said.
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| 8. | But the standard, 3, 500-pound Vision TSi has a tougher suspension that substitutes good handling for a really soft ride.
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| 9. | The objects have common values to all bidders but need not be identical, and may be either complement goods or substitute goods.
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| 10. | Most studies of market structure relax a little their definition of a good, allowing for more flexibility in the identification of substitute goods.
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