InstantInvoice 3 Cost: $69 Get the full version     Trial version     Developer's Website Contacting third-party download site please wait. If your download does not start, click here, or get the full version Descriptions InstantInvoice 3: Invoicing and quotation software for the small business. Track customer payments. Very fast setup and learning. Preview and print powerful reports and charts instantly like invoice listings, sales by customer, outstanding invoice list, customer statements and more.