I bought a $100+ item from a seller in GA. I'm in CA. She says she shipped it on the 12th. I don't think she used any kind of tracking because I asked her for a tracking number and she didn't respond. Since it's the 17th today and the item hasn't arrived yet, in your experience how long does it take for first class mail to get across the country? I'm really hoping it doesn't get lost, I'd rather have the item than open a dispute, but I seriously can't understand how ANY seller would mail anything without proof of mailing and/or tracking.