There are many places where you can find these budget wedding invitations, but mostly online. There are several online stores which have incredible discounts and many offers in what concerns their wedding invitations and that is because they want to sell their stuff and they also want to help out couples who have trouble gathering all the money they would need for a large and very expensive wedding.
Choose invitations that actually look inviting. Thick, high quality paper with bright colors or a unique design that makes the envelope stand out from other mail that may arrive on the same day. Your invitations should excite interest even before they are opened, and if you have chosen your design well, they should evoke reminders of the happy couple as well!