Amazon has 6-Pack Lutron Claro 1 Gang Decorator/Rocker Wallplate (Gloss, White) on sale for $7.88. Shipping is free w/ Prime or on $35+ orders.

Product Info:

• Features a clean appearance with no visible screws and securely mounts flush to the wall
• For use with all decorator opening devices – dimmers, switches and accessories
• Durable plastic construction for long-lasting style
• Snap-on installation is quick and easy
• Fits Caseta, Diva, Maestro, Maestro sensors, Skylark, and more
• Includes 6x Claro decorator-style wallplates