Well, I disagree with selling to the first person who shows up with cash in hand. Recently I responded to items for sale on eBay, seller said yes, she'd accept my offer. But it was a 2 hour drive. Hubby filled the car, we planned our day for the trip and when I called the seller for an address, she had sold it to a local person who could get there faster. I realize there's no way to guarantee that a buyer is serious, but at least tell the second caller that they are next in line if the first one doesn't show up. Just my two cents worth.