I don't think it is that easy, and it is going to get harder.
First, this is nothing to do with the cash. it's all to do with your memories and feelings.
If you think that the person who is buying it will appreciate it as much as YOU WANT IT TO BE APPRECIATED, then pass it on. If not, mount it on your wall, look at it and remember the good times. The value to you hasn't stopped just because you've stopped riding it.
Of course if you don't have room for it, then whatever works to shift it.