They have a desire to win and are not really thinking about the cost anymore in a rational way.

An old adage that I tend to go by:

"Something is only worth what someone will pay for it"

Has eBay really become a pit of competition where people will gamble away
their money to end up with an item they never really wanted in the first place,
but bought because they succeeded in getting the winning bid?

Surely everyone is out to buy at their own valued price;
what that price is, is for the individual to decide.

(Mine own ramblings)