Amazon.com has 3-Pack 12" x 75′ Melissa & Doug Tabletop Easel Paper Roll Refills on sale for $15.08. Shipping is free w/ Amazon Prime or on $25+
Target.com also has for a similar price 3-Pack 12" x 75′ Melissa & Doug Tabletop Easel Paper Roll Refills on sale for $15.99. Shipping is free w/ RedCard or on $35+