This is a great idea!
$10 for $20 Worth of Greeting Cards for All Occasions
Greeting Card Universe stocks just about every card imaginable: no matter the occasion, there's a card for you. You can congratulate your kid on getting braces or on getting an appendix removed. The cards are professional grade and printed on 111lb cover stock, just like the cards you're used to. Each card can be used as-is or can be customized with a personal message written in a variety of fonts and in any color. Greeting Card Universe can stamp, address and send directly to whoever you'd like, or the cards and blank envelopes can be sent to you. Each order is shipped the very next business day.
This deal can be used toward shipping and postage for the cards! (But must be used in 1 transaction)
I don't know about you, but this seems like a nice change to standing in the store for 1/2 hour looking at cards.
Go here for all the details.