Beads-diy via eBay offers this USB / Battery-Operated Snail Fan in Green, Pink, or Yellow for $5.77 with free shipping. (It's available in Blue for a few cents more.) That's the lowest total price we could find by $12, excluding the mention below. It can be powered via USB or three AA batteries (not included) and features soft blades and an on/off switch. Deal ends March 23 at 10:18 am ET.

A close price: GearXS has it in Blue for $6.99 with free shipping via coupon code "2OFF".