Help estimating a good selling price for two 15" kicker subwoofers?

[tBruin10]

i am selling two 15 inch kicker comp-vr subs, 1000 watt ma audio amplifier, slanted dual box, and a 4 gauge wire.
everything is less then 6 months old and in perfect condition besides the fact that theyve been used.

does anyone know what a good price would be to sell all these together?

 

[edwards1337]

maybe 250-300, if they were in a better box maybe 350-400 at most.