Do you really need individual place cards? You can opt for a beautifully printed table-seating chart near the front door of the reception hall to list table assignments for guests, and it will undoubtedly save gobs on materials and printing. These days, invitations really don't need two envelopes, and multiple cards for the ceremony and reception details can often be overwhelming (and easy to lose). Consider a postcard for save the dates and response cards so you don't have to pay for envelopes.
Source: Carlie Statsky via Style Me Pretty