There is no point trying to defend what you did or trying to confirm you would have bought the item as you said you would.
You did nothing wrong and there will not be an opportunity to prove your intent would become reality.
I don't agree with you coming on here and being publicly sad about it though. Shit happens. If it could have been yours for $50, it ain't that special.
What you suggest by starting this thread is that you may well be one who is quick to complain/ find fault, could be a red flag to sellers.
You had nothing to gain by making your situation public, unless you perceive some benefit to yourself in attempting to smear another's name.
There was a thread recently by one of the most well-regarded, knowledgeable, smartiest

rotflmao

posters, nick serdula recently, nick had a buyer who said I'll take it', but never did get $ to nick. Nick *****ed and whined and left red rep, the guy responded and alleged he sent $ to incorrect address, but still wanted item. Nick showed his inner baby and said that buyer was no longer eligible to purchase from him.
Sometimes the things we say about others say more about us, instead.
Shoulda not got stuck on this speed bump, imo