As mentioned FAFB seems to get good response and you can sort the wheat from the chaff so to speak in terms of viewers. EBay I used to rate but it’s no longer a deal on high ticket items and seller fees.
Once you have a ballpark price in your head, my advice is to stick to it. Depends how quickly you want to sell. Everyone wants a deal, but spend the time on the phone and emails sorting tyre kickers from genuine buyers.
Off-topic, but a few years ago I was looking for a first car as a present for my daughter who’d passed her test. Oh my God. At one point I was handed the keys to a car in the drive from a nipper who was home alone and told to test drive it.