Ebay, and make sure it is coming form Electronics Outlet out of PA they ship fast, I just bought a Avic-f900b and got it in 3 days, just so you understand that referbished isn't bad, it is something that went back to the manufacture, not cause it was broke or anything was wrong with it, but that it was opened and can not be sold as brand new for any reason, mine works great. The thing is you want to look to see how many things the seller has sold on ebay, and that is the number next there name, and make sure the seller accepts paypal, that is the only way I will purchase on there!