It can, and gets even more complicated when that widget was available locally for $Z and $Y < $Z. Was $Z so much greater than $Y that the person would have neve

It can, and gets even more complicated when that widget was available locally for $Z and $Y < $Z. Was $Z so much greater than $Y that the person would have never started to save for it? Or did $Y mean they were able to start spending at the restaurant again sooner? How do you calculate the value of the cool new widget once the person has it?