J-J,
You're obviously not going to get a decent offer from anyone here. The VAST majority of the gents and ladies on this site are well schooled in almost every avenue of club finding. Better said, you're high price is going to be questioned by anyone that takes the time to search out if they can get a better deal elsewehere.
I did a 10 second check on E-bay and found 4 drivers of the same spec, loft, shaft and condition to yours for $140USD or about £78 , with a 10USD shipping fee. You're asking double, plus.
I'm all for getting the best dollar for your equipment, and some people find it hard to part with something for so little, but the market has a high and low demand level. Unfortunately, your 983 isn't a highly demanded club right now, hence the low prices it's fetching.
No offense meant by this, or by anyone else that has posted here. You're just a bit uneducated about the market value of your club.
If you need some help, check E-bay or the PGA Value guide.
http://valueguide.pga.com/
This should bring you a little closer to what you should expect for your driver.
(Incidently, the Value Guide gives 104USD for a 983K in mint shape for resale value. That's about £58 FYI...)
Good luck in your sale,
R35