its not worthless Troni, just the sell price even with the upgrades on modularled is way less, plus its slightly used and yes wires are exposed, I think they are just trying to be realistic with you, you wont see $350 for that, even with the mounting arm and chaeto, etc. you also have to take into consideration, that not everyone and their neighbor has a tank that this light will work for. as said above, maybe try cleaning the wiring up a bit, and see what happens? part of having a SW tank is that its pleasing to the eye
good luck with the sale, and I'm not trying to be a jerk
sorry your having troubles with the sale
edit
I couldn't even sell a brand new never used 4 bulb t5 unit(48") with 8 extra bulbs and a digital timer (retail $550.00) for $275! I was pretty ticked about that lol..