While the Samsung Galaxy Note 4 may not be a new smartphone these days, it is still a fairly popular one, and a very capable one. Right now, eBay has the SM-N910 which is the Verizon model, available for just $149. This is unlocked and it does support all the appropriate GSM bands, so you'll be able to use it on Verizon, as well as GSM carriers like AT&T and T-Mobile.
The Galaxy Note 4 sports an amazing looking 5.7-inch QHD display, with a Snapdragon 805 processor inside running the show. There's also 3GB of RAM along with 32GB of storage. This does have a removable 3220mAh battery, and a micro SD card slot for expanding that storage if you so wish. This is actually the last Samsung device to sport a removable battery, which is largely why it is still so very popular. The Galaxy Note 4 does have the S Pen, which everyone loves and adores, and luckily it can't get stuck by pushing it in the wrong way, like it could with the Galaxy Note 5.
Samsung's Galaxy Note 4 is definitely a capable smartphone even today, it even out-performs some of the other mid-range and low-end smartphones on the market today, making it a great choice for a new device.