I already had an EZPASS account in Maine when we retired and moved to Tennessee, so when we got the motor home, I applied online for the tag for the motor home. I'm not sure if there was a one-time charge or if it was just paying postage. There are no monthly fees as long as we have a minimum of a $40 balance in the account. We summer in New Hampshire, so the EZPASS is handy for the tolls going up ($3.05 for the bridge crossing from PA to NYin our motor home towing the car). Tolls vary from 50 cents in the car to three to five dollars in the motor home towing on Mass. and NH roads.