Personally, I have to factor the cost of fuel into the deal. Too many times I have driven half way (or more) across the state for a meet and used a tank of diesel. 8 mpg doesn't get me far. I do not offer any less for an item, I just don't offer to buy it. In trades, I have refused or tried to work the cost of fuel into the deal. But, if I am paying damn near retail for a gun and then have to factor $75 in fuel in to the total cost; if I decide to sell 2 weeks later I am in the hole overall. I am not a wealthy man and can not afford to lose money too often or I wouldn't be able to do this hobby.