I am planning to sell my 1st generation macbook and I was wondering what is a reasonable price to ask for. It has 1gb of ram and an 80gb hard drive. It works great, although the battery is not holding a charge like it use to and will need to be replace eventually. I was thinking of asking $550, but I was wondering if I should ask for $500 instead since the battery will need to be replaced. Any suggestions would be helpful.