“This is my No. 1 dollar-store purchase,” says Kendal Perez, founder of the blog HassleFreeSavings.com. “Never again will I pay $4 to $5 for a birthday card when I can find the perfect sentiment for $0.50 to $1.” Many big-box stores now have a selection of cards that only cost a buck, but as Perez and other members of our expert panel point out, dollar stores still offer a better deal, since many sell cards for half that.