I have a few lines on my business account that aren't being used. I have device only (tablet, watch, etc.) from $30 and down, depending on options. I got them because they had various specials like half price, BOGO, etc. and I need to cancel them or let someone else use them, with that someone just auto-paying via PayPal every month. Example: the One plans are cheaper through me if you only need maybe 1-3 lines. Otherwise they are as high as $70 if you only want one. Free data/texts and even tethering (but slow) internationally.