SUBSCRIPTION
Every cellular-enabled tracking device on the market has a monthly cost associated with it, even if some try to hide it.  There are only 3 cellular network providers in the USA - Verizon, AT&T and T-Mobile -  so if you have a cellular connection of any kind, one way or another, one of them is being paid for it.  Your Van Tracker unit will be shipped with your SIM card pre-installed and ready to go.
 
Sorry, this does have to be a separate purchase.  For some reason, Wix.com won't let you purchase a physical item and subscription at the same time.