fs-Sony 30gb harddrive camcorder

I am contemplating selling my camcorder. It is a 30 gb Sony dcr-scr40 . It is in perfect condition and has been hardly used( maybe a total of 2 hours of video on it). It comes with all accessories that were in the original box as well as a bag for carrying it which will hold all cables and the dock as well as the camera. It also has 2 years warranty left at the Brick. I bought the full replacement warranty. I payed more than 700 dollars for ti last year with the warranty.
I am looking to get 500 firm or trade for a decent tent trailer or maybe a good utility trailer.

how about 400 firm or trade for an Amp and 2 10" subs in a box plus some cash?