Good luck finding a used one. You might want to check with Gary at TDR. I ended up buying a new one and the cheapest I could find it for was around $95 online. The passenger side is easy to find, but the larger driver's side motor is a bit more challenging.
What was interesting about the new motor was that it was shipped from Tennessee, but it originally came from the Dallas area (Carrollton or Lewisville). I just looked for the box, but I must have thrown it away. Maybe you will have better luck than I did finding a used one.