I actually said you could expect to get plenty of change from $900 a month.
How much would it cost to have basic E-commerce functionality as well? (I’m out of touch with prices, must be more than a decade since I last looked).
My own Ghost Pro site has managed hosting, a CMS and sends out newsletters for a few hundred dollars a year. It wouldn’t be appropriate for a food truck. But there are suitable inexpensive packaged options.