The Samsung Galaxy S6 is available over at eBay for just $207.96. This is the 64GB model, and it's the Verizon variant, but it is unlocked so it will work on other GSM networks. At the time of writing this, it is available in black, gold and white.
Samsung's Galaxy S6 was the very first smartphone to be made of metal and glass, by the company. It's definitely not the new kid on the block anymore, but it's still a great smartphone, especially at this price. It sports a 5.1-inch display, powered by the Exynos 7420 processor and has 3GB of storage. This particular model sports 64GB of storage, which is great because there is no support for a micro SD card here on the Galaxy S6, the only set of smartphones from Samsung not to have one. It's a great smartphone from Samsung, and it does also have Android 7.0 Nougat on-board (likely in an OTA waiting on the device).
eBay is offering up free shipping on the Galaxy S6, so you'll have it pretty soon, and pretty cheap. It is a refurbished model, so you'll want to check that out before you pick one up. But the seller does allow for returns, so if something is wrong with the device when you receive it, you can return it and get your money back. Which should ease the buying decision.