
Often in economics (and certainly in marketing) researchers ask consumers their willingness to pay (WTP) for an item. This can be done following an experimental manipulation to assess the impact of some variable or simply to determine how to price an item. I often use such a question in my own research and generally don’t think much of it.
Recently, however, I had an experience which makes me question the degree to which people truly know how much they are willing to pay for anything. I was bidding for an item on eBay and, being the behavioral scientist that I am, thought about what I should set as my maximum bidding price (I’m far too lazy to snipe). I knew that the item was selling for about $60 in other auctions so I quickly anchored on that value and bid about the same.
Unfortunately, a few hours later I was outbid. At this point, I started asking myself: “well am I really only willing to pay $60 for this item? What about $70?” And the truth was that I had absolutely no clue what I valued this item. From a purely economic point of view, I didn’t know how much utility I would extract from using the item. Would the marginal in crease in cost be offset by the utility I would derive?
There already is a tremendous amount of research on context effects in judgments (i.e. our subjective enjoyment/utility is highly variable and influenced by the environment that we are in), but to what degree is the uncertainty of willingness to pay understood? In auctions we know that people get attached to their item they are bidding on (i.e. endowment effect) and bid more than they should. But this applies a normative standard on how much they “should” bid.
First, I’m suggesting that people have a range that they might be willing to pay for an item rather than an absolute number. This is nothing new of course since we know that variance exists in people’s responses to just about everything. But if we stop here we would say that if we wanted to assess someone’s WTP by using a stepwise elicitation procedure where we ask a person if they would be willing to pay $1, $2, $3, etc… for an item and that would yield a maximum WTP.
However, I think that there’s more to the story. Even after a person has given his/her maximum WTP using this procedure (or any other) they still are uncertain about the utility they will derive from an item and so might adjust up or down based on some contextual cues (endowment in my auction example). If this is true, then price setting is as much of an art form as it is a science.
And please, don’t start on the supply/demand arguments as that will only make me whip out a list of ~500 papers that show how poor the demand side (people) is at figuring out anything.
So what do you think? Do people know what they are willing to pay for items?
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