With orders of $25 or more, Amazon offers Prime members the Mega Bloks Minions Vampire Surprise Pack, model no. CNF55, for $4.54 with free shipping. (Non-members can spend $35 to bag free shipping.) That's the lowest total price we could find by $8. It includes three vampire minions and a working launcher.

Note that this item is part of Amazon's add-on program and can only be purchased with an order of $25 or more.