look around ebay and the tradingpost
i got mine for $3300. needed some small bits n peices like bungs, another seat, a rubber floor mat(they get slippery!)
around this time next year, we are looking to upsize to a 8 metre one. should be some fun
oh and phatboy. if you persevere, you can pickup a good V hull, about 18ft for around that price. make sure its got all the saftey shit and NO SOFT SPOTS.
or you can swap your R34 GTR for mine