ThinkFast via Amazon offers Prime members the Crayola Model Magic Modeling Compound 2-lb. Bucket, model no. 57-4400, for $12.69 with free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping adds $6.90.) That's the lowest total price we could find by $9. The self-hardening non-toxic compound comes in four individually wrapped 8-oz. pouches.