Once Upon a Time $20.00 Inside Message Inside: And Happily Ever After 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". Once Upon a Time quantity Add to cart SKU: 579. Category: Hearts. Related Products All I See Is You $20.00 Heart at Work $20.00 With Every Move $20.00 Squeeze the Day $20.00