To bring a little closure to the thread. I sent a message to the seller to seek some clarification on what was happening. I received a response:
"I'm very that I make you misunderstanding. My English is not very good at all.
I'll explain this situation.
The First Message Explantion.
Since today is a free listing day that you don't need to pay any listing fees. So I take this chance to relist all the unsold items that I had before and relist it again. Once I finished the relist, I noticed the 1889
Morgan dollar is in 3 days instead of 5 days period and you already place a bid. So what I have to do is to cancel your bid and relist again, but I accidently click sell the item instead of cancel it. It was a mistake - that is why I want you to accept the cancel transaction.
The Second Message Explantion.
After like 10 - 20 mins later looking at my safety box - where I store my silver coins/bars, I realized that I dont have 1889
Morgan dollar at all. Then I remembered that I sold it at the Coin Store.
ALL OF THIS, IT WAS A BIG MISTAKES AND MISUNDERSTANDING. I hope you understand what I'm trying to say. I'm trying my best to explain the situation.
Thank you."
It seems it was a simple mistake on top of another mistake. I thanked them for taking the time to explain the situation and I agreed to cancel the purchase. This was the first time I've experience this, but now I know!