A very important part of the invitation set is the direction or map card. I am having map cards custom made with the invites, but I researched quite a few sites in the process that I thought I’d share:
Snappy Map: Maps custom designed and printed. They can make both formal maps and “fun” maps with cute icons. Prices start at $150 for 100 one-sided cards.
Inkspun: A lot of girls on the knot use Inkspun for computer “calligraphy” for their invite envelopes. The reviews are generally good and the prices are dirt cheap! 39¢ for the outer envelope. Inkspun also does direction cards for 39¢ for one-sided cards (49¢ for double-sided). You have to provide the content/layout.
Kristen Sanchez Designs: Map and direction card designs starting from $45. You have to print them yourself.