How do I know if my buyer isn't tricking me?

So I just put an order for White zombas for $172. My buyer claims he bought it but on my listings page, it’s not under the pending page. He claims I will get the money after he rates me, but i don’t know. is this true?

When you sell an item, that given item goes from On Sale to the Sold tab.
Gameflip notifies you via notification on site/app and email.

Check your Sold tab and On Sale to see what’s the current state of the item.

If you didn’t receive any notification and the item is on On Sale, it means the buyer is trying to trick you. If that’s the case, please report him with evidence.