Tony, the only reason your car hasn't sold is that you really don't want to sell it! Buyers set pricing in any market, not appraisers or sellers. '69 Z's in the condition of your car are in the $60's, so how can anyone expect a '68 to be in that range also??? '68's just don't bring strong money. You've done your home work and asked many people about the car's value, so you know what it is worth today. My advice is to keep the car and enjoy it until you really need the money one day for something else