Easy way to trade "rare" items "safely"

[Zeedin]

1st Put the item in an item frame.
2nd When you can see the colored name send them the money / do step one if trading.
3rd Once the money is received remove the item frame and let them pick it up.

Now I know they could just run in and pick it up. So you could ask them to sit in a box so they can't just run out right away, or put the item frame on a piston and have the piston brake the item frame.

And yes this is not 100% safe but it is a quick and easy way of adding a bit of safety when trading high value items, and this would only work if it is a item with a colored name.

GIFV of example