If you are getting rid of one let me know. A search on the forum of recent sales below, looks like $250 with the mount is going price right now. Let me know, thanks.
http://www.marinecolorado.org/threads/tank-breakdown.26076/#post-316607
http://www.marinecolorado.org/threads/mp10wes-and-xr15-gen3-rms.25953/#post-315784
http://www.marinecolorado.org/threads/tank-breakdown.26076/#post-316607
http://www.marinecolorado.org/threads/mp10wes-and-xr15-gen3-rms.25953/#post-315784