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 Beyond Words $20.00 Light a Candle $20.00 Each of Us Makes a Ripple $20.00