I forgot to add that the seller on eBay has to provide the phone’s IMEI either by photo (of the box) or in the description, so it can be verified as clean and that it’ll work with my provider’s network. It also doesn’t matter to me that the seller has 500 or more positive feedbacks. As long as they have 25-50 positives (or thereabouts) and a decent longevity on eBay I consider them golden. There are some wireless shops that deal in volume sales. They can be a tad trickier but most of the time if they accept returns you are probably going to be okay. There are no guarantees on eBay, so carefully doing your research is paramount to coming out on top.