With orders of $25 or more, Amazon offers the Nordic Ware 10.5" Microwave Spatter Cover, model no. 65000, for $1.97 with free shipping. That's tied with last week's mention and the lowest total price we could find by $6. It fits most standard dinner plates.

Note: This item is in Amazon's "Add-on Program"; it can only be purchased with an order of $25 or more.