Cold Steel Trailmaster Value?

[MrBadExample]

Hello everyone, I have a Cold Steel Trailmaster with the sambar stag handle that I had picked up about 9 years or so ago. Recently, someone expressed an interest in buying it, and since I don't use it, I am giving it some thought. My only problem is that since it appears to be out of production I am having a difficult time placing a value on it. Unfortunately, I don't remember what I paid for it either. The knife is in very good shape but does have some minor staining from having been in the leather sheath for some time and the button on the sheath is broken. Can anyone give me an estimate on its value?

Thanks