KBToys via eBay offers this Kids' Captain America 2 Deluxe Costume for $4.98 plus $2.99 for shipping. That's $20 off list and the lowest total price we could find. It's designed for ages 4 to 6, and includes a padded muscle suit and molded mask.
Shnoop via eBay offers two Sun Protection Zone Kids' Adjustable Safari Boonie Hats in Blue or Pink for $8.99 with free shipping. That's tied with our mention from a month ago as the lowest total price we've seen. (It's also $8 under what you'd pay for two hats elsewhere today.) Each hat features a pattern that is only revealed when exposed to sunlight.