For less than $20, you’ll have to go to one of those pick & pull salvage yards and hope to find a 4th gen in their lot. Otherwise for a brand new one, multiple online Toyota dealers sell them for $40 not including shipping. Amazon and EBay both have them as well. $44 bucks with free shipping on Amazon.
Here’s the part #90975-02038 I believe.
I’m replacing my whole rear hatch handle because it’s broken. But the emblem is totally fine. Happy to send it to you. Email me at [email protected] and we’ll arrange shipping. I’m in Canada but I don’t expect it would cost more than $20 to ship it.