The Maverick Office Supplies Tier 1 is a vendor tradeline from Maverick Office Supplies. The annual fee is $0. Minimum time in business: 90 days. Maverick Office Supplies Sign Up for a Free NET 30 Account Take advantage of this opportunity to sign up for a free NET 30 account by using the following link: Maverick Office Supplies . At checkout, make sure to input the code TENOFF to receive a 10 | PG verification: Many vendor accounts typically require a personal guarantee, especially for new businesses.