Walmart offers the Rachael Ray 3.5-Quart Stoneware Covered Rectangular Casserole in Red, model no. 58411, for $39.99. (Amazon charges the same with free shipping.) Opt for in-store pickup to avoid the $4.97 shipping charge. That's the lowest price we could find by $10, outside of the mentions below. It measures 16" x 12" x 8" and is dishwasher, oven, and microwave safe up to 500-degrees F.
Of note: Walmart and Amazon also offer this in Black for $41.19 with pickup and free shipping, respectively.
A close price: Home Depot offers this in Red for $41.19 with free shipping.