Amazon currently has 24 Packs of Silly Bandz Pets marked down to $1.99 with FREE Shipping (from $5.99)! Last time these were available they sold out quickly, so go now if you want to snag some!
They also have these available:
Silly Bandz Princess 24 Pack $2.19 with Free Shipping
Silly Bandz Rock Bandz 24 Pack $2.29 with Free Shipping