Cnbirdsfly via eBay offers these LED Flashing Stud Earrings in eight colors (Blue pictured) for 99 cents with free shipping. That's tied with our mention from last week as the lowest total price we've seen. (It's a current low by $2, excluding other eBay vendors.) They're made of cubic zirconia.
Note: This item ships from mainland China and may take three to eight weeks for delivery.