Its unfortunate the OP got scammed. But just my opinion, the risks of buying something like a smartphone from Craigslist outweigh the benefits. Not just risk of a blacklist, but damage to the item, or just a hardware failure that is no fault of the seller. I prefer to buy from a source with a reliable means of return and refund/exchange, even if its cost a bit more. And if its more than a "bit" of a difference, as they say: if a deal seems too good to be true, its because it is.
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Phone: AT&T HTC One (M8)
Tablet: Samsung Galaxy Tab Pro 8.4 (WiFi only)