This is completely wrong.
You CAN prove you sent the item on your photo.
Simply take a picture of the item SIGNED at the FEDEX or UPS Outlet (Sorry, I'm in America) with the backplate off (or serial number visible), then take another with it on (if applicable), then take a third with the courier packaging the item, then a fourth with the receipt and the box being shipped.
You can even have the clerk sign the paper showing that this is the item you are sending. There is absolutely NO way to fake this when you do all this work, and any disputes about 'fake items' and 'scams' will be in the seller's favor after all this work is done.
The only counter to this is for the BUYER to open the package WITH the delivery guy there---which means it needs to be HELD at the delivery location (since the driver isn't going to do anything, he needs to have it at the courier itself), then the buyer picks it up, opens it with the UPS/Fedex representative to document the opening, and then to document the contents of the package. Now the BUYER has full and complete protection on what was delivered. Whoever didn't do all this work is going to lose any dispute.
Then the only final issue is whether the item actually works or not or whether or not the buyer broke the card. But if both opening and packaging are documented by both parties, there can't be any switcheroo's or bricks instead of cards appearing. If the serial number is visible on both shipping and receiving, if the buyer tries to return an incorrect card and you verify with the courier it's incorrect, he's in a LOT of trouble.