Target offers the Pyrex Easy Grab 8-Piece Glass Bakeware and Food Storage Set, model no. 1093839, for $13.59. Opt for in-store pickup to avoid the $4 shipping charge. (Amazon has it for the same price with free shipping for Prime members.) That's a buck under our April mention and the lowest price we could find today by $3, excluding the mention below. It includes a 3-quart oblong dish, 8" square baking dish, and two 1-cup storage dishes, all with blue plastic lids.
A close price: Walmart has it for $13.86 with in-store pickup.