Exactly. There are a few MikroTik routers for less than $60. They are all rock solid and full of functionality, including watchdog timer.
http://wiki.mikrotik.com/wiki/Manual:System/Watchdog
http://www.amazon.com/Mikrotik-hAP-AC-Lite-RB952Ui-5ac2nD/dp...
http://www.amazon.com/MikroTik-RB951Ui-2HnD-5-Port-Wireless-...
http://www.amazon.com/Mikrotik-RB941-2nD-TC-Lite-2-4Ghz-802-...
http://www.amazon.com/MikroTik-RouterBOARD-2-4GHz-Access-Poi...
http://www.amazon.com/MikroTik-RouterBOARD-2-4GHz-Ceiling-Ac...