Ok. lets get in to it.
1)Your gear is 3-5 years old. No matter how many times you use it you will not get that money. If that stuff was brand new but that old you would not get that money. I can right now go and buy this years gear at 20-30% off at local shops yet you are offering a meager 50% off on used gear that is 5 seasons old.
2) Do you realize how much tech has changed in that amount of time? The '11 Targas are leaps and bounds beyond the '08's not to mention the 2012 stuff is trickling out and that has been upgraded too. I think it is safe to say the majority of peopel are riding some form of reverse camber these days pushing your board even more out of date. That being said the UnInc is a popular and legendary board and some people may want it. And if they do they can go buy it brand new for $370. burton uininc - Google Search
3)I started this out by saying no offense and trying to be helpful, even suggesting craigslist where people know less about gear than here and you can get higher prices. BUT... since you are a dick I have felt the need to rant.
4) I think it is safe to say you know have no chance of getting $500 for that gear on this site anyway.
5) Good day to you sir! I said good day!