I am disputing the existence of that number. If two parties enter into an agreement to exchange X for Y, and no one has a gun to their head, then the market value of X is Y at that time for that party, and the market value of Y is X at that time for that party.
"I could literally survive the next 10 minutes without buying this" is not the same thing as "if I don't buy this soon, my life will not be significantly worse off."
Poverty's not known for opening up options for people.
