Internet Wedding Invitation Business

I am trying to begin an online wedding invitation business. I already have the name picked out & I have someone set to create my website. Unfortunatly I don`t know how to get the supplies I need. Would I be manufactoring these invites myself in my home or is there a company that would do it for me when I reiceive an order...? Or, do I have to actually make them myself as they are being requested by buyers? Does anyone know how it works....? Thanks!