What money do you WANT for it and how much money do you NEED for it? Advertise it somewhere in between those numbers and be willing to take your NEED value if offered, depends how quick you require the money. F cars have been hit and miss with quickness of sale, so sometimes approaching a dealer might be your best option over a private sale but they will undercut you, to of course mark it back up to make their cut.
With the market the way it is, somewhere in 30's is probs your price, depends on your car options and an overpriced market isn't your fault, but if you competed with the 15 plate cars, surely you'd win?