Hey Wayne,
I feel for you and I'm sorry to hear that there have been complications, but is it the sellers fault that you didn't look far enough ahead to say "Before I commit to buying something or bidding on it, maybe I can see if I can still afford it".
Also, as horrible as it sounds nobody knows your situation but you don't know the sellers either.
You don't know if they needed that or relied on that purchase to feed their family, pay for their house or already had commitments that they needed to make.
Think ahead.
Bruno