Adorama has a great deal on the Glow Collapsible Circular Wind Proof Reflector with Handles (52″) — it’s only $14.95 for a limited time. Save $45 from the regular price of $60!
This is an innovative and large 52″ reflector intended for outdoor use — aluminum fabrics are spun in a weave pattern that allows breezes to pass through, while the light is captured and reflected off of a serrated metallic surface. While it is not as mirrorlike as a traditional collapsible reflector, it delivers the light without being overwhelming. Other sizes are similarly discounted.
I purchased one of these during a past deal, and I love it. Delivers great, diffuse light, easy to transport, and well-built.