Sharing a Success Story: I am still slapping my face to see if what happened just happened. I am a training consultant who has not had a solid gig in over 18 months... well I finally am about to sign a very nice contract, and I wanted to get the new Air (13", 4GB Ram, 128 storage) for the project. My wife said I FIRST needed to sell my Black MacBook, mid-2007, specs 2.16 Ghz, upgraded 500 HDD, upgraded 4 GB Ram, and a 4-month old battery from Apple Store (they replaced my swollen one for free). Well, I tried Craigslist for a week at a price I knew was high ($900), but was hoping against hope. I included in the ad that I would listen to reasonable offers. My ad also stated my profession, the pristine condition of the MacBook, would include a one-hour tutorial for a new Mac buyer, and posted several pix. NO LUCK. Knowing that I meet with my client on Monday, I pleaded to my wife last Wednesday if I could buy the Air now, and I would promise to sell the MacBook at a lower price (but not lower than $500) - So I ordered the Mac Air that evening, then a few minutes later I put another ad on Craigslist. It had pretty much the same info, accept a different headline: "Black MacBook - Original Owner Wants to Sell Immediately = $800)... I even wrote that I was willing to listen to reasonable offers. Then after posting, I changed my mind about reasonable offers. I wanted to see if I would get a bite first before accepting reasonable offers. BITE! Literally less than an hour on Craigslist, I had an interested person whose husband's PC computer just crashed, and he decided to try a Mac because of the lack of viruses. He needed it by Saturday because he is a dj and had a wedding that day! (Today in fact!) So that plus selling the OEM hdd from that MacBook to a different person (but on the same day) - I now had over $840 to put directly toward the Air. So to recap, bought Air on Wed, sold MacBook on Thu, got Air on Fri! HAPPY HAPPY JOY JOY My advice to anyone selling on Craigslist - write it as if you are seriously interested in purchasing the product yourself. Include pix and humor! It helps!