Up for your consideration is a ZyXEL ZyWall 110 VPN Firewall. Also includes power supply. All ZyXEL items are in good working order and have been reset to factory default for you to setup and use. We used ZyXEL for many years at our locations and home offices. Our IT firm changed owners and we recently went with a new firm that uses and supports different equipment. The ZyXEL products have always worked great for us and is a good product. I just don't know how to program these and the new firm doesn't really work with them.
Let me know if you have any questions. I will do my best to try and help.