The trouble with this is that it's only worth what someone wants to pay, if someone is desperate to get hold of one, ( which I don't think this will be the case as the model shops aren't struggling to supply them like the Durango's ) they'll pay more than someone who is just looking for any chassis to get going with or is just looking for any chassis at the best price.
How much has it cost you ? What do you want for it ? Put it up at what price you want, if no one offers you any cash you know you've got it too expensive, if it goes within an hour or so you know you could have got more for it and you will just have to learn from your experience...
It's one of those how long is a piece of string questions ? ( twice the length from the middle to the end - before any other smart arse posts that
)