Buy Now Pray Later $20.00 Inside Message Blank Inside Packages of Heartstrings® cards are shrink-wrapped and sold in sets of 10 cards with envelopes. The actual card size is 4 1/4" x 5 1/2". Buy Now Pray Later quantity Add to cart SKU: 404. Categories: Friendship & Support, Humor, Women. Related Products Memories, Blue Jeans, Bicycle Seats and You $20.00 Friendship is Continuous $20.00 The World is at Your Feet $20.00 Room With a View $20.00