Kirkland Signature Elegant Plastic Plates Premium Heavy Weight Size ( 7.5″/10.25″) 50Count – Link

Amazon has this currently marked down to $9.99.

• Elegant – This plates add an elegant touch to any event without the risk of breaking glass.
• Premium quality – Made from premium quality extra heavy duty recyclable plastic.
• Upscale disposable – Hand washable, reusable, and disposable for quick after party clean-up.