Price elasticity of demand
Closeness of substitutes: If the substitutes of a good is very similar to the original good, consumers are able to change between the different types of goods easily as it makes no difference in using either good. For example, the demand for a specific brand of sugar is likely to be price elastic as the taste of sugar is largely the same for different types of brands. Hence, a good with more similar substitutes would be more price elastic than one with less similar substitutes.