What Is the Monthly Charge for Using Relay? Sarah W. May 30, 2018 21:05 Updated Follow Answer $6.99/month (plus taxes) per Relay. Related articles Do I Have to Be a Republic Wireless Member to Use Relay? Relay FAQs How to Send/Receive a Message Using Relay (Archived) How Much Does Relay Service Cost? How Many Relay's Can Be on One Account?