What Do I Charge For A Wedding Invitation How Much Should I Charge For Designing A Wedding Invitation?

How much should I charge for designing a wedding invitation? - what do i charge for a wedding invitation

The invitation is in postcard format, the equipment, designed and I think it took probably about 5 hours to create. Many returning and a new design that the client do not really know what I wanted! I design book covers separated for some time before, but never wedding invitations, so just want to know what is reasonable.