I have one for $35 shipped. What year is your car. The 91-93 have a round lug at the rear of the door, and the 94-96 have a lobe shaped one. You can use the 91-93 in the 94-96, but if you use the 94-96 in a 91-93, you must elongate the hole to accept the lug. Otherwise both parts are the same.
When removing/installing the part put some tape on the paint around the part, so you do not scratch your paint. You may have to remove the triangle on the front to avoid damage to the top part. There is a screw at the front, and a tree fastener along the top middle of the triangle. Use caution removing the tree fastener, because it is part of the black plastic of the triangle, and irreparably damages the triangle if broken.
To remove the metal reveal, first, you have to remove the top of the run channel starting at the front, the Phillips screw at the top of the door, next lift the lug out of the hole, then pull down on the metal part. It is held on by clamping pressure of the part, andwill rotate on the spear from the triangle a little, but if you pull it down too far, either the spear on the triangle will bend, or the reveal will bend. Usually the spear bends. Also be careful removing the run channel, it can catch the clips that hold the inside reveal to the door, and break the off of the reveal. The clips are extremely difficult to reattach to the inner reveal.