Loub for around $50 there are heaps on Ebay, make sure you get one with a hard wired 12v charger, some of the cheaper ones don't.
I went with a Aussie seller for the technical support, the seller was snowbeans but I have had the unit too long for him to be in my history.
I remember a feature of his add was that his unit came with a free Amaysim phone card but I went with Aldi.
There are different features with the units and one that will set off a alarm on command may help to find the van should the worst happen.
The unit will need phone and GSP signal, the phone will work inside the van but the GPS may struggle.
This is similar to the unit I have but this is not the seller I purchased from.
http://www.ebay.com.au/itm/GPS-Tracker- ... 35d6a053e1You friends and family can keep track of you when you are on the road.
I know of two motorcyclists recently that disappeared and were weeks later found dead by their bikes, a tracker would have made them a easy find.