The current value of used FM3 units in very good to mint condition is around $900-1000. You can buy a new one for $1099 and are in stock. However all of this will change if and when FM9 units become more readily available. The fact that they are not is keeping the FM3 market on higher ground currently. The difference of $500 between the too units if new and both available is probably not enough to choose the FM3 over the FM9 for many guitarist looking for a higher end modeler above $1K.
You’re probably right on that. I would like a 9 but the FM3 does plenty for me. Cant sell it now cause then I’m back to my old rig, which is really nice. But outshined by the versatility of the FAS products. I’m totally spoiled now and my guitar life without my FM3 wouldn’t be the same. So if I wait until the FM9 is readily available then I won’t get as much back most likely. Still might do it but I’m thinking prices would average somewhere in the $700-$800 range.