How does the Marketplace / Bidding section work?

I had posted 1 product/access to sell here at a fixed price of 100$.
https://forums.digitalpoint.com/thr...e-google-drive-storage-1-access-left.2860780/
While the thread says "Sold to XYZ" i.e. a person already bought it and I see him as a winner under https://forums.digitalpoint.com/marketplace/selling , I do not see the transaction amount in my account yet!
The thread has been marked as Sold and no one else can buy it now.
Also, I need some info...

How does the Marketplace / Bidding section work?

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