Most used cars are down on value these days. Its a buyers market, so none of us will ever get what we expect for our cars. I spent a fortune on my BA ute when I blew the engine, but know I wont get anywhere near half of what it cost. As already stated, its an 05 car, so its 8 years old regardless of mods. Unless someone wants the mods you have done, its probably worth $15-18,000 tops IMHO. And sorry about the doubt on your selling reasons, a bit more info at the start may have saved that.