Can we say that price is more susceptible to have interaction with some of other attributes compare to other attribute types? The reason is that for instance in case of having attributes which represent the quality in general, respondent will normally prefer lower price and higher quality independently. But when the quality is high and the price is also reasonably low(not to provide signal of low quality) the respondent will be much more willing to buy the product.
Therefore, there is a synergy effect that cannot be explained by separate utility value of price and quality.
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