My wife owns a Roland EP-707 digital intelligent piano and recently we purchased an upright for her. We'd like to sell the Roland to help recover the cost but I haven't been able to find any information online about it or what it might be worth. Is there anyone here on the forums who might know something about that model and be willing share some information? The most I've been able to find about it is that it was probably built around 1993 and is a 76 key piano.

Thanks for your time!
-Eric