Meet the Wio Tracker: a GPS/Bluetooth tracker that lets you keep an eye on any moving object. It is compatible with Arduino and Grove platforms. The Wio tracker comes with 99 channels and comes with GPS, GSM, and BT antennas. It comes with a nano SIM and microSD 2-in-1 socket.
The device comes with 6 Grove connectors. It is available for under $40 at this time.