Meritline offers the YONGNUO Speedlite Camera Flash with Diffuser, model no. YN460 II, for $39.99 with free shipping. That's the lowest total price we could find by $10. It features a built-in diffuser board, output level adjustment, charge indicator, swivel head, and more. It requires four AA batteries, although it's unclear whether they are included. Deal ends July 5.

Expect this item to take two to three weeks to arrive.