The cost is $29.00 per month. If you are joining an office (or opening your own office) and the office and principal broker belong to a board of REALTORS® as a REALTOR® member, the cost to subscribe to the service is $29.00 per month per licensed subscriber affiliated with the office.f you are joining an office (or opening your own office) and the office and principal broker does not belong to a board of. REALTORS® as a REALTOR® member, the cost to subscribe to the service is $42.00 per month per licensed subscriber affiliated. with the office. All fees are billed quarterly in advance.