Instant Billing Instant Billing is an add-in program that requires that you first install and configure Instant Quote Professional OR PC Reseller System. Instant Billing allows you to create billing records, with various ... Cost: $85 Buy full version       Trial version       Publisher: PC Experts     Descriptions Instant Billing: Instant Billing is an add-in program that requires that you first install and configure Instant Quote Professional OR PC Reseller System. Instant Billing allows you to create billing records, with various billing cycles / frequencies, for your customers. From your customer billing records, a batch billing process will search out billing records that are due for invoicing.