Being a 3-month freemium solution, Link4 will not cost you anything to use for an initial time frame until you want to upgrade to the premium features. You can receive up to 10 invoices a month on the Link10 plan for up to 3 months. Even in the paid plans, the average cost is less than a postage stamp to receive an invoice or bill. For pricing inquiries, send us an email at [email protected].