As you're in West Sussex, you should have taken it to Arundel station at 10.30 last Sunday. I couldn't be there myself, but there were several Kona owners on the Retrobike ride and I'm sure you would have received some good advice. Principally, not to sell it of course!
The 1995 is probably the most popular Kilauea and the white colour scheme is much imitated by people respraying other models, sadly without ever coming even close to the quality of the original pearlescent finish of course.
Having said that, I wouldn't expect it to raise more than £250-300 on eBay, and the size 16 is obviously worth a little less than an 18 or 19. If you really just want to raise money on it, the best advice, as is invariably the case, is to break it down and sell it part by part. e.g., I would expect the ti bar to raise £35 on here. In any case, if you have spare original parts, you should definitely sell them separately, not add them into an auction along with the bike. If you have the original seat post and saddle, they are worth c£20-25 each. I would be interested in the post myself.
This is my slightly bigger one (17), nowhere near as good as yours I expect.
You don't really want to sell it for such a small amount though, do you? It's a part of your youth, something to hang onto, you would surely regret losing it. And now that you've discovered Retrobike, you can get some use out of it by going on RB rides - e.g., http://www.retrobike.co.uk/forum/viewtopic.php?t=142866