I recently sold two black iPhone 4s, one was 16 GB, the other was 32 GB. I am an experienced eBay seller in another category, so I spent many hours researching the iPhone 4 category. What I learned was I could probably set my own price with a Buy It Now listing, rather than taking a chance with an auction. But I noticed that the three day listings (the minimum for BIN) received a lot more activity than listings that were longer. I also noticed that listings that had several very good pictures seemed to sell better than those that did not. Phones that brought top dollar almost consistently had clear, thorough descriptions. Phones that were described as "looks great, works good" still sold, but not always for top dollar. I had several weeks to do my research, so I was able to notice that Sunday afternoons (Eastern time) saw a significant number of sales as opposed to other times of the week. On the Sunday before I listed the first phone, 20% of the total listings in my category sold. That's huge compared to just 4% on a Wednesday or Thursday. I had AT&T unlock the phones, cleaned them so they shone, took pictures along with the original box, and wrote my listings. Since I wanted to start my listing on a Sunday afternoon, and I had some lag time, I went ahead and listed the first phone on Craigslist three days before I listed it on eBay. Here's what happened: The 16GB sold within 30 minutes of listing it. Two weeks later I listed the 32 GB with a three day auction, starting on Thursday morning. I couldn't wait to list it, and I figured it wouldn't hurt. If it didn't sell, I could still relist it on Sunday afternoon to capitalize on the huge amount of traffic in that listing at that time. It sold Friday night, so I never had to relist it. Both of these sales were on eBay. 16GB-$259 32GB-$297 While I had them on Craigslist, I received messages such as "How much you sell your iPhone 4?", "Will you take less because I don't want to spend much money?" (I directed him to the broken screen phones on eBay), or my personal favorite "$100", and various other noncommittal messages. I was concerned about meeting someone and exchanging cash, wondering if the cash was counterfeit. I had the phones listed for less on Craigslist than I did on eBay, but even if I would have ended up with more than selling it on eBay (doubtful because everyone seemed to want it for much less than I listed it), I found eBay much easier. I shipped the phones via USPS with insurance and signature confirmation. I had no problems with scammers, but I think that was because my listing was very professionally written. I wish I had more to sell because it was SO MUCH FUN!