How much is my golf set worth?

Hi! I have a set of Cobra J Speed junior golf clubs from 2007 or so, which I would like to sell so I could buy a new set, but I don't have any idea of the value. So it would be cool if someone could tell me the approximate value for my set both used and refurbished. The set contains a golf bag, an 8-iron, a 5/R baffler 27� (I don't know what's that one for), a 3-fairway, a 1-driver with 350cc of titanium in the head, a wedge and a mallet putter. Oh... and a baseball cap :D. The clubs are in general good condition and remain undamaged, but are just a bit scratched in the head. I think the materials are mostly steel and fibers. Used and refurbished, how much do you think it's worth?