Well, if that works for you, then that's great. But for me, if I'm looking at a six hour round-trip to look at a bike, I want to make it clear to the seller up front what the maximum amount I'd be willing to pay for an item whose condition corresponds to the description. I say --'If the item is as described, the maximum I will pay is $2100. If it's not as described, I may offer less -- at that point you can accept the lower offer or not, but the maximum I can pay for the item as described is $2100".
If someone won't negotiate a reasonable price with me on the phone but instead expects me to drive six hours just to haggle, then I don't want to buy a bike from that person...simple enough.