Virtual Offices in Grapevine, TX $45.00 Lowest priced packages in Grapevine! Professional Image - Affordable. Corporate Grapevine Mailing Address. $45/Month Mail Package. $85/Month Mail & Phone Package. 25% Discount on Meeting Room Rentals. Meet clients in one of our two (2) fully stocked meeting rooms. Each meeting room is fully equipped with high-speed internet and a wireless presentation gateway to stream HD content to an LED/Smart TV.