With orders of $25 of more, Amazon offers Prime members the Crayola See Thru Light Designer, model no. 74-7051, for $5.98 with free shipping. (Non-members can spend $35 to bag free shipping.) That's the lowest total price we could find by $9. It features seven light animation and effect combinations.
Note that this item is part of Amazon's add-on program and can only be purchased with an order of $25 or more.