Don't know where the best place to post this would be, so I hope this is the related forum for this question. I have a colleague at work who is wanting to sell his Yamaha3000iseb for 2 Honda 2000s. The Yamaha ef3000iseb looks to be in good condition (based on pictures he sent me) and is around 4-5 years old with over 250 hours on it. He's wanting me to give him a price, but I have no idea what is a reasonable price for this unit used. Any ideas?