Best prices on Leapfrog pen in Learning Toys. Check out BizRate for great deals on Learning Toys from LeapFrog and Learning Curve. Use BizRate's latest online shopping features to compare prices for Leapfrog pen. Read product specifications, calculate tax and shipping charges, sort your results, and buy Toys & Games with confidence. Easily narrow your search and find the product that's perfect for you: Leapfrog Pink Tag Reading Pen PLUS 3 Storybooks & Case - LeapFrog My First LeapPad.