I'm planning on attending this years Minis at the Gap event for the fifth time. I'm driving my R56S and thinking of putting it up for sale. You'd think by now I'd have a pretty good idea of its value....but after a lot of searching, prices seem to be all over the map...especially as an automatic. So, if this is OK, any thoughts would be appreciated.

2012 R56 S Automatic
31K miles in fantastic condition
Always covered and garaged
Color is Spice Orange Mica
No dings, scratches, etc.
Factory stock, no mods or upgrades