Hi there, I'm based in Europe and have some questions for you: a) do I need any certification from Apple if I want to buy and resell used Apple devices (primarily iPhones)? The volume would average 10-50/mth, I would buy and sell on local websites similar to craigslist. I don't mean to open a brick & mortar store AT ALL, nor do I wish to sell new Apple products, I'm still in college and run a small eBay account with a sole proprietorship. Just want to know whether it's allowed by Apple. b) Can I give my own company's warranty with used items? Naturally, I plan to assist costumers and repair/replace units that have been broken. Thanks!