Here is the scenario . . . .
A buyer purchased a home that was listed for $800,000 but since multiple offers he paid $950,000 for the home to win the bid. This was in 2021. He put 10% down and carried a mortgage for $855,000. Now seller has to unexpectedly move for work and doesn't want to rent the home because his new job is taking him out of the country and wants to sell the property. Now property is worth $825,000 (hopefully we get full price) and there isn't enough equity to move forward with a standard sale even if he does a for sale by owner. His other option is to bring money to the table to close if there isn't enough proceeds to pay his mortgage off.
We will see how this plays out.