M Code '69 Dart GTS

What I'm looking for is a price range for a '69 GTS 440 car. Like when you go to Hagerty.com and look at their Value Guide. They don't have a value guide for an M Code Dart so I thought I would ask the question at the "For A Bodies Only" forum to see if there might be some one or a few people that might be able to do this. Not asking anyone to shoot in the dark and it doesn't matter what I can afford.
The last nice one I saw for sale was 60k. It was show car condition. Dont know if it was matching numbers or had paper work. I would expect to pay 60-85 k for a nice one with paper work. Only so many of these cars so the owners can ask what they want and somebody will pay it. For example my 68 383 4 speed car.I had paper work and fender tag.It has racing history and I had vintage photos.It was a 36,000 mile cat. I sold it as a roller with matching trans and NO engine. I had a few FABO know it alls tell me it was only worth 5-7 k. I sold it for 14k... My asking price. I knew what the car would bring and it did.