Important: If you do not receive what was supposed to be traded do NOT click on 'Complete Transaction'. Verify that you have received the item and as described in the listing you bought, complete the trade and return to Gameflip to click on 'Complete Transaction'. Take a screenshot of the purchased item in the 'New Item Received' screen.Take a screenshot of the open trade offer window showing the item being received.Once in-game, open up the trade interface with the seller to inspect and accept the trade offer.Take a screenshot of the Lobby showing you in the party with the seller.Add the seller as a friend and then join a party with them when you are both online.At checkout, you will have to give your Xbox Gamertag, Playstation ID, or Steam profile URL and coordinate a time when you are both online.You can buy Rocket League items as any other item, but given the nature of the trading system inside this game, take precautions and follow the steps below after buying an item: